JPH01222109A - Forced combustion device - Google Patents
Forced combustion deviceInfo
- Publication number
- JPH01222109A JPH01222109A JP4675888A JP4675888A JPH01222109A JP H01222109 A JPH01222109 A JP H01222109A JP 4675888 A JP4675888 A JP 4675888A JP 4675888 A JP4675888 A JP 4675888A JP H01222109 A JPH01222109 A JP H01222109A
- Authority
- JP
- Japan
- Prior art keywords
- fan
- air
- intake
- taken
- port
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 35
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 210000003323 beak Anatomy 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
- F23M20/005—Noise absorbing means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野及び発明の概要〕
本発明は、送風用のファンによって燃焼用空気を燃焼室
に送り込む形式の燃焼装置、すなわち。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application and Summary of the Invention] The present invention relates to a combustion apparatus in which combustion air is sent into a combustion chamber by a blowing fan.
強制燃焼装置に関するものであり、特に、共鳴音の発生
を防止する為の吸気ダクトをファンの吸気口に連設した
強制燃焼装置に関するものである。The present invention relates to a forced combustion device, and particularly relates to a forced combustion device in which an intake duct is connected to an intake port of a fan to prevent the generation of resonance noise.
［従来技術とその問題点］
強制燃焼用のファンによって燃焼用空気を燃焼室に送り
込む形式の燃焼装置としては、例えば。[Prior Art and its Problems] Examples of combustion devices in which combustion air is sent into a combustion chamber by a fan for forced combustion include:
第６図に示すようなものがあり、このものでは。There is something like the one shown in Figure 6, and this one.
ブンゼン式バーナー（３）及びこの上方に配設される熱
交換器（８０）を密閉の箱体（９１）内に収容し、この
箱体（３１）の頂壁に排気管（８２）を、底壁に燃焼用
のファン（１）を、それぞれ連通させている。The Bunsen burner (3) and the heat exchanger (80) disposed above it are housed in a sealed box (91), and an exhaust pipe (82) is installed on the top wall of the box (31). A combustion fan (1) is connected to each bottom wall.
このものは、燃焼用空気を上記ファン（１）によって供
給する押し込み燃焼式であることから、小さな燃焼室で
大華のガスを燃焼させることができるが、その反面、ヘ
ルムホルツ型共１＠ 音の発生が避けられない、この為
、前記ファン（１）の吸引口（１０）に、同図に示すよ
うに、吸気ダクト（２）を連設し、これにより、燃焼時
に生じる圧力波の大震等を回避し、上記した共鳴音の発
生が防止できるようにしである。この吸気ダクト（２）
の吸気通路長さは実験結果から所定に設定されるもので
、他の装置と共に本体ケース内に収容される。Since this type is a forced combustion type in which combustion air is supplied by the fan (1) mentioned above, it is possible to burn Daika gas in a small combustion chamber, but on the other hand, the Helmholtz type also generates noise. Therefore, as shown in the figure, an intake duct (2) is connected to the suction port (10) of the fan (1), thereby reducing the pressure waves generated during combustion. This is to avoid the occurrence of the above-mentioned resonance sound. This intake duct (2)
The length of the intake passage is set to a predetermined value based on experimental results, and the device is housed in the main body case along with other devices.
他方、別種の強制燃焼装置として、第７図に示すように
、ガスノズル（Ａ）をファン（１）のケーシング内に突
出させた形式のプレミックスバーナー（８３）を用いた
ものがある。このものにおいても、ファン（１）に吸気
ダクト（２）を連設することにより、ヘルムホルツ型共
鳴音の発生を防止できる。On the other hand, as shown in FIG. 7, another type of forced combustion device uses a premix burner (83) having a gas nozzle (A) protruding into the casing of the fan (1). In this case as well, by connecting the fan (1) with the intake duct (2), it is possible to prevent Helmholtz resonance from occurring.
ところが、吸気ダクト（２）をファン（１）に連設する
型式のものでは、ファン（１）の吸気能力はｆ分である
にも拘らず、強制燃焼時における燃焼室への送風量が不
足してしまうと言う問題がある。However, in the type in which the intake duct (2) is connected to the fan (1), although the intake capacity of the fan (1) is f minutes, the amount of air blown into the combustion chamber during forced combustion is insufficient. There is a problem with doing this.
これは、ファン（１）の吸気能力よりも実際に吸引され
る空気量が少なくなってしまうからである。This is because the amount of air actually sucked in is smaller than the suction capacity of the fan (1).
即ち、吸気ダクト（２）の内壁面と吸気口（２０）から
吸引された空気との間の摩擦によって圧力損失が生じ、
ファン（１）の吸気圧に対する吸気量が少なくなってし
まうからである。That is, pressure loss occurs due to friction between the inner wall surface of the intake duct (2) and the air sucked from the intake port (20).
This is because the amount of intake air relative to the intake pressure of the fan (1) becomes small.
尚、吸気ダクト（２）の吸気通路の断面を十分に大きく
設定した場合には、前記抵抗は少なくなるが、器具に内
蔵する形式のものでは吸気ダクトの占有スペースは無駄
な空間部となることから、前記断面をあまり太き彎とは
望ましくない。Note that if the cross-section of the intake passage of the intake duct (2) is set to be sufficiently large, the above-mentioned resistance will be reduced, but if the intake duct is built into a device, the space occupied by the intake duct will be wasted space. Therefore, it is not desirable that the cross section be too thickly curved.
［技術的課題］
本発明は、このような「燃焼用空気給送用のファン（１
）を設け、該ファン（１）の吸引口（１０）に吸気通路
の長さを所定に設定した吸気ダクト（２）を連設する型
式の強制燃焼装置」に於いて１強制燃焼時における燃焼
室への送風量の不足を解消する為に、吸気ダクト（２）
から吸引される空気量を増加せしめることを、その技術
的課題とする。[Technical Problem] The present invention is directed to such a "combustion air supply fan (1
), and an intake duct (2) with a predetermined length of the intake passage is connected to the suction port (10) of the fan (1). In order to solve the problem of insufficient air flow into the room, the intake duct (2)
The technical challenge is to increase the amount of air sucked in from the
［技術的手段］
上記技術的課題を解決する為に講じた本発明の技術的手
段は、ｒ吸気ダクト（２）の下流端近傍に開口面積の小
さな補助吸気口を設けた」ことである。[Technical Means] The technical means of the present invention taken to solve the above technical problem is to provide an auxiliary intake port with a small opening area near the downstream end of the r intake duct (2).
［作用Ｊ 上記技術的手段′は次のように作用する。[Action J The above technical means' works as follows.
吸気ダクト（２）には、補助゛吸気口が設けであるから
、燃焼用空気は吸気口と共に補助吸気口から吸引される
こととなる。Since the intake duct (2) is provided with an auxiliary intake port, combustion air is drawn in from the auxiliary intake port together with the intake port.
重犯補助吸気口は吸気ダクト（２）の下流端近傍に位置
させであるから、補助吸気口からファン（１）の吸引口
（ｌＯ）までの距離は短く、これから吸引された空気と
吸気ダクト（２）の内壁面との接触域は非常に小さい。Since the auxiliary air intake port is located near the downstream end of the intake duct (2), the distance from the auxiliary air intake port to the suction port (lO) of the fan (1) is short, and the air sucked from this port and the air intake duct ( 2) The contact area with the inner wall surface is very small.
したがって、補助吸気口から吸引された空気がファン（
１）の吸引口（１Ｇ）に到達するまでに生じる圧力損失
は小さいものとなるから、吸気口からは従来のものとほ
ぼ同量の空気が吸引されることと即ち、吸気ダクト（２
）から吸引される空気量は、従来のものと比較して、補
助吸気口から吸引される空気量の分だけ増加することと
なる。Therefore, the air sucked from the auxiliary intake port is transferred to the fan (
Since the pressure loss that occurs before reaching the suction port (1G) in 1) is small, almost the same amount of air is sucked from the suction port as in the conventional case.
) is increased by the amount of air sucked from the auxiliary intake port compared to the conventional one.
［効果］ 本発明は上記構成であるから次の特有の効果を有する。[effect] Since the present invention has the above configuration, it has the following unique effects.
吸気ダクト（２）から吸引される空気量は、従来のもの
と比較して、増加することとなるから１強制燃焼時にお
ける燃焼室への送風量が不足を解消することができる。Since the amount of air sucked from the intake duct (2) is increased compared to the conventional one, it is possible to solve the problem of insufficient amount of air blown to the combustion chamber during one forced combustion.
吸気ダクト（２）の下流側に設けられる補助吸気口の開
口面積は小さいから、この補助吸気口を設けたことによ
って共鳴音防止効果が損なわれることはない。Since the opening area of the auxiliary intake port provided on the downstream side of the intake duct (2) is small, the resonance sound prevention effect is not impaired by providing this auxiliary intake port.
［実施例］
以下１本発明の実施例を第１図〜第５図に基づいて説明
する。[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 5.
本発明の第１実施例を第１図に示す。A first embodiment of the present invention is shown in FIG.
この強制燃焼装置は、従来のものとほぼ同様の構成であ
るが、第１図に示すように、吸気ダクト（２）をファン
（１）との連結部近傍を屈曲させてＬ字状に形成し、そ
の屈曲部であり且ファン（１）の吸引口（１０）と対向
する位置に補助吸気口となる小孔（８） 、 （８）
を設、けている。This forced combustion device has almost the same configuration as the conventional one, but as shown in Figure 1, the intake duct (2) is bent near the connection with the fan (1) to form an L-shape. There are small holes (8), (8) which serve as auxiliary intake ports at the bent part and at a position facing the suction port (10) of the fan (1).
has been established.
このものでは、下流端部にファン（１）の相フランジを
具備させており、この相フランジを利用してポル）−ナ
ツトでファン（１）に取付けるようにしている。In this device, a companion flange of the fan (1) is provided at the downstream end, and this companion flange is used to attach to the fan (1) with a pole nut.
本発明の第２実施例を第２図〜第４図に基づいて説明す
る。A second embodiment of the present invention will be described based on FIGS. 2 to 4.
この実施例の燃焼装置の吸気ダクト（２）は、第４図に
示すように、吸気ダクト（２）を扁平な中空円柱体内に
区画壁（２９）をうず巻状に屈曲させた構成とし、第２
図及び第３図に示すように、前記円柱体の周壁に吸気口
（２０）を、一方の端面の中央部にファン（１）の吸引
口（１０）との連結部となる接続口（２１）を、更に、
前記接続口（２りと対向する端面に補助吸気口となる小
孔（６） 、 （８）を設けている。As shown in FIG. 4, the intake duct (2) of the combustion device of this embodiment has a structure in which the partition wall (29) is bent in a spiral shape within a flat hollow cylindrical body. Second
As shown in FIGS. 3 and 3, an intake port (20) is provided on the peripheral wall of the cylindrical body, and a connection port (21) is provided at the center of one end surface to be connected to the suction port (10) of the fan (1). ), furthermore,
Small holes (6) and (8), which serve as auxiliary intake ports, are provided on the end faces facing the connection port (the two).
前記区画壁（２９）は、第４図に示すように、中央側（
吸気通路の下流側）のエンド部の断面を厚肉で且丸く整
形した水滴状断面部（２８）としである。As shown in FIG. 4, the partition wall (29) has a center side (
The cross section of the end portion (on the downstream side of the intake passage) is thick and rounded to form a waterdrop-shaped cross section (28).
又、このエンド部とほぼ対向する位置に吸気をファン（
１）内に導く為の案内板（２７）を突設している。した
がって、上記吸気通路の下流側において、水滴状断面部
（２８）により区画壁（２９）の端部での流れの方向の
急変が緩和されると共に案内板（２７）によって吸気ダ
クト（２）の下流端から吸引口（１０）への流れの方向
変化・も円滑なものとなる。In addition, a fan (
1) A guide plate (27) is provided to guide the user inside. Therefore, on the downstream side of the intake passage, the droplet-shaped cross section (28) alleviates the sudden change in the flow direction at the end of the partition wall (29), and the guide plate (27) allows the intake duct (2) to The direction change of the flow from the downstream end to the suction port (10) also becomes smooth.
又、このものでは、Ｅ記接続口（２１）にファン（１）
の相フランジを具備した短管を設けており、前記相フラ
ンジを利用してポルト・ナツトでファン（１）の側壁に
取付けるようにしている。Also, in this case, a fan (1) is attached to the E connection port (21).
A short pipe is provided with a companion flange, and the fan (1) is attached to the side wall of the fan (1) using a port nut using the companion flange.
続いて、本考案の第３実施例を第５図に基づいて説明す
る。Next, a third embodiment of the present invention will be described based on FIG. 5.
この実施例の燃焼装置の吸気ダクト（２）は、第５図に
示すように、ファン（りの吸引口（１０）を具備するケ
ーシング壁面を吸気ダクト（２）の構成壁面とするもの
であり、−面開放の皿状のケーシング内に第１実施例と
同様のうず巻状の区画壁（２８）、小孔（θ）、（Ｅｌ
）、案内板（２７）及び水滴状断面部（２８）を具備さ
せたものである。そして、＠状ケーシングの開放端には
フランジ（２Ｂ）が配設してあり、このフランジ（２６
）を利用してファン（１）の側壁にポルト・ナツトで固
定するようにしである。As shown in FIG. 5, the intake duct (2) of the combustion device of this embodiment uses the wall surface of the casing provided with the suction port (10) of the fan as the constituent wall surface of the intake duct (2). , a spiral partition wall (28) similar to the first embodiment, a small hole (θ), (El
), a guide plate (27), and a waterdrop-shaped cross section (28). A flange (2B) is provided at the open end of the @-shaped casing, and this flange (26
) and fix it to the side wall of the fan (1) with port nuts.
この実施例のものでは、小孔（８） 、 （Ｅｌ）
、案内板（２７）、水滴状断面部（２８）が、第２実施
例におけると同様、ファン（１）の吸引口（１０）に一
致するようにファン（＋）に皿状のケーシングを取付け
ると、吸気ダクト（２）が形成できることとなる。In this example, the small hole (8), (El)
A dish-shaped casing is attached to the fan (+) so that the guide plate (27) and the droplet-shaped cross section (28) coincide with the suction port (10) of the fan (1), as in the second embodiment. Then, the intake duct (2) can be formed.
このものは、ファン（１）の半径方向における突出量が
最小限のものとなると共に軸芯方向における突出量も最
小となり、最も、コンパクトなものとなる。In this case, the amount of protrusion of the fan (1) in the radial direction is minimized, and the amount of protrusion in the axial direction is also minimized, making it the most compact.
又、この実施例のものは１区画壁（２８）を具備する吸
気ダクト（２）を耐熱合成樹脂の射出成形又はアルミ合
金等のダイキャスト成形によって製作可能である。Further, in this embodiment, the intake duct (2) having one partition wall (28) can be manufactured by injection molding of heat-resistant synthetic resin or die-casting of aluminum alloy or the like.
尚、と記した第２及び第３実施例のものにおいて、燃焼
発熱能力が６千〜３万ｋｃａ ｌ／ｂの可変式の強制燃
焼装置とし、排気管（ａ２）の長さを１ｍ〜１２ｍ、吸
気ダクト（２）の吸気口（２０）の大きさを嘴＋１３０
ｍｍＸ高５３５ｍｍ、更に、吸気通路の長さを４．５ｍ
の長さに設定した場合には、直径４ｍｍの小孔を所定の
位置に４個設けるようにすれば、大能力時（３万ｋｃａ
ｌ／ｈ）における吸気の不足分は十分に補えると“ぎう
実験による結果がでた。In the second and third embodiments described above, a variable forced combustion device with a combustion heat generation capacity of 6,000 to 30,000 kcal/b is used, and the length of the exhaust pipe (a2) is 1 m to 12 m. , the size of the intake port (20) of the intake duct (2) is the beak + 130
mm x height 535 mm, and the length of the intake passage is 4.5 m
When setting the length to
Experiments have shown that the lack of intake air at 1/h) can be sufficiently compensated for.
又、上記のものでは、小使力時（１万ｋｃａｌ／ｈ）に
おけるヘルムホルツ讐共鳴音とは別種のｒピーｊという
音も防止できるという結果もでた。In addition, the above-mentioned product was also able to prevent the r-p-j sound, which is different from the Helmholtz resonance sound, when using power (10,000 kcal/h).
第１図は本発明の第１実施例の吸気ダクト（２）の説明
図、第２図〜第４図は本発明の第２実施例の吸気ダクト
（２）の説明図、第５図は第３実施例の吸気ダクト（２
）の説明図、第６図及び第７図は強制燃焼装置の説明図
であり、図中、
（１）・・・・ファン
（２）φ・・・吸気ダクト
（１０）・・・・吸引口FIG. 1 is an explanatory diagram of the intake duct (2) according to the first embodiment of the present invention, FIGS. 2 to 4 are explanatory diagrams of the intake duct (2) according to the second embodiment of the present invention, and FIG. Intake duct of the third embodiment (2
), Figure 6 and Figure 7 are explanatory diagrams of the forced combustion device. mouth
Claims (1)
）の吸引口（１０）に吸気通路の長さを所定に設定した
吸気ダクト（２）を連設する型式の強制燃焼装置に於い
て、吸気ダクト（２）の下流端近傍に開口面積の小さな
補助吸気口を設けた強制燃焼装置。A fan (1) for supplying combustion air is provided, and the fan (1)
) In a type of forced combustion device in which an intake duct (2) with a predetermined length of the intake passage is connected to the intake port (10) of the A forced combustion device with an auxiliary intake port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4675888A JPH01222109A (en) | 1988-02-29 | 1988-02-29 | Forced combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4675888A JPH01222109A (en) | 1988-02-29 | 1988-02-29 | Forced combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01222109A true JPH01222109A (en) | 1989-09-05 |
| JPH0418208B2 JPH0418208B2 (en) | 1992-03-27 |
Family
ID=12756230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4675888A Granted JPH01222109A (en) | 1988-02-29 | 1988-02-29 | Forced combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01222109A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTV20090054A1 (en) * | 2009-03-23 | 2010-09-24 | Lainox Ali Spa | PRESSURE COMPENSATOR DEVICE FOR FITTING THE AIR SUCTION TUBE TO THE SLEEVE OF AN INTAKE MANIFOLD FOR BURNER, AND OVEN OF THE GAS TYPE TO CONVECTION OR MIXED FOR THE COOKING OF FOODS PROVIDED WITH THIS DEVICE |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5775507B2 (en) * | 2011-12-27 | 2015-09-09 | リンナイ株式会社 | Combustion device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS485064U (en) * | 1971-05-27 | 1973-01-20 | ||
| JPS5455731U (en) * | 1977-09-22 | 1979-04-18 |
-
1988
- 1988-02-29 JP JP4675888A patent/JPH01222109A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS485064U (en) * | 1971-05-27 | 1973-01-20 | ||
| JPS5455731U (en) * | 1977-09-22 | 1979-04-18 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTV20090054A1 (en) * | 2009-03-23 | 2010-09-24 | Lainox Ali Spa | PRESSURE COMPENSATOR DEVICE FOR FITTING THE AIR SUCTION TUBE TO THE SLEEVE OF AN INTAKE MANIFOLD FOR BURNER, AND OVEN OF THE GAS TYPE TO CONVECTION OR MIXED FOR THE COOKING OF FOODS PROVIDED WITH THIS DEVICE |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0418208B2 (en) | 1992-03-27 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |