JP3686486B2 - Original mixed gas combustion equipment - Google Patents

Original mixed gas combustion equipment Download PDF

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Publication number
JP3686486B2
JP3686486B2 JP24210296A JP24210296A JP3686486B2 JP 3686486 B2 JP3686486 B2 JP 3686486B2 JP 24210296 A JP24210296 A JP 24210296A JP 24210296 A JP24210296 A JP 24210296A JP 3686486 B2 JP3686486 B2 JP 3686486B2
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JP
Japan
Prior art keywords
mixed gas
fan
fuel gas
combustion
original mixed
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
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JP24210296A
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Japanese (ja)
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JPH1089627A (en
Inventor
泰道 郡
知裕 森田
正俊 浅川
伯一 久保田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Tokyo Gas Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Tokyo Gas Co Ltd
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Filing date
Publication date
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Priority to JP24210296A priority Critical patent/JP3686486B2/en
Publication of JPH1089627A publication Critical patent/JPH1089627A/en
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Publication of JP3686486B2 publication Critical patent/JP3686486B2/en
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【０００１】
【発明の属する技術分野】
本発明は元混合型ガス燃焼装置に関するものであり、さらに詳しくは低圧で供給される燃料ガスを用いて、吸収式冷温水機用燃焼装置、吸収式冷凍機、蒸気ボイラー、温水ボイラー、加熱調理器、暖房器、その他各種装置に適用できる大容量の元混合型ガス燃焼装置に関するものである。
【０００２】
【従来の技術】
従来、元混合型のガス燃焼装置は専用ファンにて送気される燃焼用空気と燃料ガスを混合室内へ別々に導く構造のものであり（例えば、特開平２−２７２２１８号公報、実開平２−１１５６２５号公報などに開示されている）、小容量のものに限られて使用されていたので、燃料ガスの供給圧力が低圧であっても混合室への供給が可能であった。しかし、容量の大きなガス燃焼装置においては設計上混合室内の圧力が大きくなるので、燃料ガスの供給圧力を高くする必要があり、低圧で供給される燃料ガスを用いて容量の大きな元混合型のガス燃焼装置を設計することは困難であった。
【０００３】
【発明が解決しようとする課題】
本発明の目的は、上記の問題を解決し、低圧で供給される燃料ガスを用いることができる容量の大きな元混合型ガス燃焼装置であって、吸収式冷温水機用燃焼装置、吸収式冷凍機、蒸気ボイラー、温水ボイラー、加熱調理器、暖房器、その他各種装置に適用でき、ＮＯｘ発生量を低く抑える（例えば、３０ｐｐｍ以下）ことができる、燃焼音が小さいなど騒音発生を低く抑えることができる、燃焼炉を小型化して省スペース化できるなどの特徴を有する元混合型ガス燃焼装置を提供することである。
【０００４】
【課題を解決するための手段】
本発明者は上記の課題に鑑み鋭意研究した結果、燃料ガス用ファンと燃焼用空気用ファンを同一ケーシング内に設けてそれぞれのファンを同一軸により駆動して燃料ガスと燃焼用空気を混合するようにして燃料ガス用ファンの吸い込み能力を大きくすればよいことを見出し本発明を成すに至った。
【０００５】
本発明の請求項１の発明は、燃料ガス用ファンと燃焼用空気用ファンを一体構造として同一ケーシング内に仕切を設けずに設けるとともに、それぞれのファンを一駆動源に連結された同一軸により駆動して、前記ケーシング内で燃料ガスと燃焼用空気を混合することを特徴とする元混合型ガス燃焼装置である。
【０００６】
本発明の請求項２の発明は、請求項１記載の元混合型ガス燃焼装置において、燃料ガス用ファンの吸い込み口と燃焼用空気用ファンの吸い込み口を同一側に設けず、前記ケーシングの両側に分離して設けたことを特徴とする。
【０００７】
本発明の請求項３の発明は、請求項２記載の元混合型ガス燃焼装置において、燃焼用空気用ファンの吸い込み口を前記駆動源の側に設けたことを特徴とする。
【０００８】
【発明の実施の形態】
図１は、本発明の元混合型ガス燃焼装置の一例を示す説明図である。
図１において、本発明の元混合型ガス燃焼装置１Ａは、燃料ガス用ファン２と燃焼用空気用ファン３が同一のケーシング４内に設けられており、それぞれのファン２、３は駆動モータ５に連結された同軸６により駆動されている。ケーシング４内に燃料ガス用ファン２および燃焼用空気用ファン３が一体構造で配置されている。
そして燃料ガス用ファン２の吸入部１０には駆動モータ５の反対側からケーシング４を貫通してケーシング４内に通じている燃料ガス配管１１が配設されており、そして燃焼用空気用ファン３の吸入部１２にはケーシング４に通じている燃焼用空気通路１３が設けられている。ケーシング４に整流室１５および燃焼器１６を直接連結している。
【０００９】
上記の構成の本発明の元混合型ガス燃焼装置１Ａにおいて、燃焼用空気は燃焼用空気用ファン３により吸い込まれて通路１３より吸入部１２を経てケーシング４内に入り、そして燃料ガスはファン２により吸い込まれて配管１１を経て吸入部１０からケーシング４内に入り、燃料ガスおよび燃焼用空気はケーシング４内で混合され、次の整流室１５内で整流され、燃焼器１６で燃焼されるようになっている。
【００１０】
上記の構成の本発明の元混合型ガス燃焼装置１Ａは、燃料ガスを燃料ガス用ファン２により吸い込ませるようにしたので、低圧で供給される燃料ガスを用いることができる。しかも、燃焼用空気の必要量を燃料ガスと十分に混合して安定供給できるので、燃焼状態が安定して炎の温度が大きく変化しないので、十分な低ＮＯ x 化を図れる上、燃焼音が小さいなど騒音発生を低く抑えることができる。ファン２、３を一つの駆動モータ５に連結された軸６により駆動するようにしたので燃焼炉を小型化して省スペース化できる利点があるとともに、ケーシング４内で燃料ガスと空気を容易に混合できるので混合室を別に設けなくてもよく、燃焼炉をさらに小型化して省スペース化できる。
【００１１】
上記の構成の本発明の元混合型ガス燃焼装置１Ａにおいては燃料ガス用ファン２の吸い込み口１０と燃焼用空気用ファン３の吸い込み口１２を同一側に設けず、駆動モータ５側に燃焼用空気通路１３を設けたので、駆動モータ５の取り付け部などに引火性のある混合ガスが存在せず、安全性が高いので、駆動モータ５とケーシング４との連結部を防爆構造にする必要がない。
本発明の元混合型ガス燃焼装置の他の例として、燃焼用空気通路１３を例えば燃料ガス配管１１の側に設けて燃焼用空気用ファン３により吸い込ませる例を挙げることができるが、この場合は、駆動モータ５の取り付け部などに引火性のある混合ガスが存在する恐れがあるので、駆動モータ５とケーシング４との連結部を防爆構造にすることが好ましい。
【００１２】
【発明の効果】
本発明の元混合型ガス燃焼装置は低圧で供給される燃料ガスを用いることができ、大型の吸収式冷温水機用燃焼装置、吸収式冷凍機、蒸気ボイラー、温水ボイラー、加熱調理器、暖房器、その他各種装置に適用できる。本発明の元混合型ガス燃焼装置は、ＮＯｘ発生量を低く抑えることができる、燃焼音が小さいなど騒音発生を低く抑えることができる、燃焼炉を小型化して省スペース化できる。
【図面の簡単な説明】
【図１】 本発明の元混合型ガス燃焼装置の一例を示す説明図である。
【符号の説明】
１Ａ 元混合型ガス燃焼装置
２ 燃料ガス用ファン
３ 燃焼用空気用ファン
４ ケーシング
５ 駆動モータ
６ 軸
１０、１２ 吸入部
１１ 燃料ガス配管
１３ 燃焼用空気通路
１５ 整流室
１６ 燃焼器[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an original mixed gas combustion apparatus, and more specifically, using a fuel gas supplied at a low pressure, an absorption chiller / heater combustion apparatus, an absorption chiller, a steam boiler, a hot water boiler, and heating cooking The present invention relates to a large-capacity original mixed gas combustion apparatus that can be applied to a heater, a heater, and other various apparatuses.
[0002]
[Prior art]
Conventionally, an original mixed gas combustion apparatus has a structure in which combustion air and fuel gas fed by a dedicated fan are separately guided into a mixing chamber (for example, Japanese Patent Laid-Open No. Hei 2-272218, Japanese Utility Model Laid-Open No. 2). -Disclosed in Japanese Patent Laid-Open No. -115625) and the like, it was used only for small-capacity ones, so that it could be supplied to the mixing chamber even when the supply pressure of the fuel gas was low. However, in a large-capacity gas combustion apparatus, the pressure in the mixing chamber is increased by design, so it is necessary to increase the supply pressure of the fuel gas. It was difficult to design a gas combustion device.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a large-capacity original mixed gas combustion apparatus that can solve the above-described problems and that can use fuel gas supplied at a low pressure, including an absorption chiller / heater combustion apparatus and an absorption refrigeration It can be applied to various machines, steam boilers, hot water boilers, heating cookers, heaters, and other various devices, and can reduce the amount of NOx generated (for example, 30 ppm or less). Another object of the present invention is to provide an original mixed gas combustion apparatus having features such that the combustion furnace can be downsized to save space.
[0004]
[Means for Solving the Problems]
The present inventors have result of intensive research in view of the above problems, each of the fan by providing a combustion air fan with fuel gas fan in the same casing and driven by the same axis as the fuel gas combustion air The present inventors have found that it is only necessary to increase the suction capacity of the fuel gas fan by mixing the fuel gas fans.
[0005]
The invention of claim 1 of the present invention is provided with without providing the partition in the same casing as a unitary structure the combustion air fan and fuel gas fan, the same shaft connected to each of the fans on one drive source It is driven by a source mixed gas combustion apparatus, which comprises mixing a fuel gas for combustion air in the casing.
[000 6 ]
The invention according to claim 2 of the present invention, in the original mixed gas combustion apparatus according to claim 1, without providing the suction port and the combustion intake port of the air fan of fuel gas fan on the same side, of the casing It is characterized by being provided separately on both sides.
[000 7 ]
According to a third aspect of the present invention, in the original mixed gas combustion apparatus according to the second aspect, a suction port of a combustion air fan is provided on the drive source side.
[000 8 ]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an explanatory view showing an example of the original mixed gas combustion apparatus of the present invention.
In FIG. 1 , an original mixed gas combustion apparatus 1 </ b> A of the present invention is provided with a fuel gas fan 2 and a combustion air fan 3 in the same casing 4, and each of the fans 2 and 3 includes a drive motor 5. It is driven by a coaxial 6 connected to . Fuel gas fan 2 and the combustion air fan 3 in Ke pacing 4 are arranged in an integral structure.
And the suction portion 10 of the fuel gas fan 2 are the fuel gas pipe 11 is disposed extending through the casing 4 opens into the casing 4 from the opposite side of the drive motor 5, and the combustion air fan 3 is provided with a combustion air passage 13 communicating with the casing 4 . Connecting the rectifier chamber 15 and the combustor 16 directly Ke pacing 4.
[000 9 ]
In the original mixed gas combustion apparatus 1A of the present invention having the above-described configuration, the combustion air is sucked by the combustion air fan 3 and enters the casing 4 through the suction passage 12 from the passage 13, and the fuel gas flows into the fan 2. So that the fuel gas and the combustion air are mixed in the casing 4 and rectified in the next rectifying chamber 15 and burned in the combustor 16. It has become.
[00 10 ]
In the original mixed gas combustion apparatus 1A of the present invention having the above-described configuration, the fuel gas is sucked by the fuel gas fan 2, so that the fuel gas supplied at a low pressure can be used. Moreover, since the required amount of combustion air can be sufficiently mixed and stable supply and a fuel gas, since no change temperature is large stable flame combustion state, on attained a sufficiently low NO x reduction, combustion noise Noise generation such as small can be suppressed low. Since the fans 2 and 3 are driven by a shaft 6 connected to a single drive motor 5, there is an advantage that the combustion furnace can be reduced in size and space can be saved, and fuel gas and air are easily mixed in the casing 4. Therefore, it is not necessary to provide a separate mixing chamber, and the combustion furnace can be further downsized to save space.
[00 11 ]
Without providing the suction port 12 of the suction port 10 and the combustion air fan 3 of fuel gas fan 2 on the same side in the original mixed gas combustion equipment 1 A of the present invention having the above configuration, the drive motor 5 side Since the combustion air passage 13 is provided in the mounting portion, there is no flammable mixed gas in the mounting portion of the drive motor 5 and the safety is high. Therefore, the connection portion between the drive motor 5 and the casing 4 has an explosion-proof structure. There is no need to do.
As another example of the original mixed gas combustion apparatus of the present invention, an example in which the combustion air passage 13 is provided on the fuel gas pipe 11 side and sucked by the combustion air fan 3 can be given. Since there is a possibility that a flammable mixed gas may be present in a mounting portion of the drive motor 5 or the like, it is preferable that the connection portion between the drive motor 5 and the casing 4 has an explosion-proof structure.
[00 12 ]
【The invention's effect】
The original mixed gas combustion apparatus of the present invention can use fuel gas supplied at a low pressure, and is a large-sized absorption chiller / heater combustion apparatus, absorption chiller, steam boiler, hot water boiler, heating cooker, heating Applicable to various devices. The former mixed gas combustion apparatus of the present invention can reduce the amount of NOx generated, can suppress the generation of noise such as a low combustion noise, and can downsize the combustion furnace and save space.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an example of an original mixed gas combustion apparatus of the present invention.
[Explanation of symbols]
1 A source mixed gas combustion device 2 Fuel gas fan 3 combustion air fan 4 casing 5 drive motor 6 shaft 10, 12 intake section 11 the fuel gas pipe 13 for combustion air passage 15 rectification chamber 16 combustor

Claims (3)

燃料ガス用ファンと燃焼用空気用ファンを一体構造として同一ケーシング内に仕切を設けずに設けるとともに、それぞれのファンを一駆動源に連結された同一軸により駆動して、前記ケーシング内で燃料ガスと燃焼用空気を混合することを特徴とする元混合型ガス燃焼装置。Together provided without providing the partition in the same casing as a unitary structure with the fuel gas fan for combustion air fan, each fan is driven by the same shaft which is connected to one driving source, fuel within the casing An original mixed gas combustion apparatus characterized by mixing a raw material gas and combustion air. 燃料ガス用ファンの吸い込み口と燃焼用空気用ファンの吸い込み口を同一側に設けず、前記ケーシングの両側に分離して設けたことを特徴とする請求項１記載の元混合型ガス燃焼装置。Without providing fuel gas fan suction opening and the suction port of the combustion air fan to the same side, the original mixed gas combustion apparatus according to claim 1, characterized in that provided separately on both sides of the casing . 燃焼用空気用ファンの吸い込み口を前記駆動源の側に設けたことを特徴とする請求項２記載の元混合型ガス燃焼装置。3. The original mixed gas combustion apparatus according to claim 2 , wherein a suction port of a combustion air fan is provided on the drive source side.
JP24210296A 1996-09-12 1996-09-12 Original mixed gas combustion equipment Expired - Fee Related JP3686486B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24210296A JP3686486B2 (en) 1996-09-12 1996-09-12 Original mixed gas combustion equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24210296A JP3686486B2 (en) 1996-09-12 1996-09-12 Original mixed gas combustion equipment

Publications (2)

Publication Number Publication Date
JPH1089627A JPH1089627A (en) 1998-04-10
JP3686486B2 true JP3686486B2 (en) 2005-08-24

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040052099A (en) * 2002-12-13 2004-06-19 엘지전선 주식회사 Device of pre-mixture for pre-mixture type gas burner
NL2005880C2 (en) * 2010-12-17 2012-06-19 Intergas Heating Assets B V A FAN FOR A HOT WATER DEVICE, A HOT WATER DEVICE CONTAINING SUCH A FAN AND A METHOD FOR MIXING A FUEL AND OXIDATOR.
CN103742915B (en) * 2014-01-09 2016-06-15 艾欧史密斯(中国)热水器有限公司 A kind of multi-cavity gas-air mixing arrangement
US10823400B2 (en) 2014-01-09 2020-11-03 A.O. Smith Corporation Multi-cavity gas and air mixing device

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