JPH0712713U - Flame burner faceplate for gas burner - Google Patents
Flame burner faceplate for gas burnerInfo
- Publication number
- JPH0712713U JPH0712713U JP3639693U JP3639693U JPH0712713U JP H0712713 U JPH0712713 U JP H0712713U JP 3639693 U JP3639693 U JP 3639693U JP 3639693 U JP3639693 U JP 3639693U JP H0712713 U JPH0712713 U JP H0712713U
- Authority
- JP
- Japan
- Prior art keywords
- flame
- air
- burner
- face plate
- sectional area
- 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
Landscapes
- Gas Burners (AREA)
Abstract
(57)【要約】
【構成】 耐熱板体に所要数の炎口群を一様に分布させ
た状態で設けるとともにこの炎口群を所要数の炎口を近
接させることにより形成し、生ガスと加圧空気との混合
気を前記炎口から噴出させ、前記耐熱板体の表面で燃焼
させるガスバーナ用炎口面板において、前記炎口群にお
ける外周部炎口の混合気流入口断面積を混合気流出口断
面積よりも小としたガスバーナ用炎口面板である。
【効果】 炎口群における外周部炎口から流出する混合
気の流速を内部炎口から流出する混合気の流速よりも低
下させることによって、火炎のリフト現象の発生しやす
い外周部炎口においてかかるリフト現象を押さえること
ができるため、不完全燃焼を起こすことが少ないととも
にリフト音を発生させることが少なく、この結果、混合
気の流量および空気比を広範囲に変化させても、炎口面
板全体にわたって良好な燃焼を確保しやすいものであ
る。
(57) [Summary] [Structure] The heat-resistant plate is provided with the required number of flame ports in a uniformly distributed state, and this flame port group is formed by bringing the required number of flame ports close to each other. In a flame burner face plate for a gas burner, in which a mixture of air and pressurized air is ejected from the flame vent and burned on the surface of the heat-resistant plate, a mixed air flow inlet cross-sectional area of an outer peripheral flame nozzle in the flame nozzle group is mixed air flow. This is a flame burner face plate for a gas burner that is smaller than the outlet cross-sectional area. [Effect] By lowering the flow velocity of the air-fuel mixture flowing out from the outer peripheral flame port in the flame port group to be lower than the flow velocity of the air-fuel mixture flowing out from the inner flame port, the flame lift phenomenon is likely to occur in the outer peripheral flame port. Since the lift phenomenon can be suppressed, incomplete combustion is less likely to occur and lift noise is less likely to be generated. As a result, even if the flow rate and air ratio of the air-fuel mixture are changed over a wide range, the entire flame nozzle face plate It is easy to ensure good combustion.
Description
【0001】[0001]
この考案はガスバーナ用炎口面板に関し、特に、高負荷、高空気比のガスバー ナにおいて保炎のために使用されるものである。 This invention relates to a flame burner face plate for a gas burner, and is particularly used for flame holding in a gas burner with a high load and a high air ratio.
【0002】[0002]
プレート状炎口面板を備え、高負荷、高空気比のガスバーナにあっては、各炎 口群の火炎が互いに加熱しあって温度を上げ、燃焼速度を上昇させている。 In a high-load, high-air-ratio gas burner equipped with a plate-shaped flame nozzle face, the flames in each nozzle group heat each other to raise the temperature and increase the combustion speed.
【0003】[0003]
しかしながら、かかる従来の炎口面板の外周部炎口にあっては、混合気(生ガ スと燃焼用空気とを混合した気体)の流量を増加させたり、空気比が上昇したり すると火炎のリフト現象が発生して不完全燃焼を起こしたりリフト音を発生した りして、安定した燃焼を得にくいという不都合を有した。 However, at the outer peripheral flame nozzle of such conventional flame nozzle face plate, if the flow rate of the air-fuel mixture (gas mixture of raw gas and combustion air) is increased or the air ratio is increased, the flame The lift phenomenon occurs, resulting in incomplete combustion or a lift noise, which makes it difficult to obtain stable combustion.
【0004】 この考案の課題はかかる不都合を解消することである。An object of this invention is to eliminate such inconvenience.
【0005】[0005]
前記課題を達成するために、この考案に係るガスバーナ用炎口面板においては 、耐熱板体に所要数の炎口群を一様に分布させた状態で設けるとともにこの炎口 群を所要数の炎口を近接させることにより形成し、生ガスと加圧空気との混合気 を前記炎口から噴出させ、前記耐熱板体の表面で燃焼させるガスバーナ用炎口面 板において、 In order to achieve the above object, in the flame burner face plate for a gas burner according to the present invention, the heat-resistant plate is provided with a required number of flame port groups in a uniformly distributed state, and the flame port groups are provided with the required number of flame ports. In a flame burner face plate for a gas burner, which is formed by bringing the ports close to each other, a mixture of raw gas and pressurized air is jetted from the flame port and burned on the surface of the heat-resistant plate,
【0006】 前記炎口群における外周部炎口の混合気流入口断面積を混合気流出口断面積よ りも小としたものである。The cross sectional area of the mixed air flow inlet of the outer peripheral flame nozzle in the flame nozzle group is smaller than the cross sectional area of the mixed air flow outlet.
【0007】 なお、前記耐熱板体の周縁部に枠状に所要数の保炎炎口を配置するとともにこ の保炎炎口の流入口断面積を同流出口断面積よりも小とすることもできる。It is also possible to arrange a required number of flame holding flame openings in a frame shape at the peripheral portion of the heat resistant plate and to make the inlet cross section of the flame holding flame openings smaller than the same outlet cross section. .
【0008】[0008]
この考案に係るガスバ−ナ用炎口面板は上記のように構成されているため、炎 口群における外周部炎口から流出する混合気の流速を内部炎口から流出する混合 気の流速よりも低下させることができる。 Since the flame burner face plate for the gas burner according to the present invention is configured as described above, the flow velocity of the air-fuel mixture flowing out from the outer peripheral flame ports in the flame port group is higher than the flow velocity of the air-fuel mixture flowing out from the internal flame ports. Can be lowered.
【0009】 なお、前記耐熱板体の周縁部に枠状に所要数の保炎炎口を配置するとともにこ の保炎炎口の流入口断面積を同流出口断面積よりも小とすれば、さらに、外周部 炎口から流出する混合気の流速を内部炎口に流出する混合気の流速よりも低下さ せることができる。Further, if a required number of flame holding flame openings are arranged in a frame shape at the peripheral edge of the heat resistant plate and the inlet cross section of the flame holding openings is made smaller than the same outlet cross section, The flow velocity of the air-fuel mixture flowing out from the outer peripheral flame port can be made lower than the flow velocity of the air-fuel mixture flowing out to the inner flame port.
【0010】[0010]
図1において、1はガスバーナGの外胴(この考案の「ケーシング」に相当す る)、2はこの外胴1の内側に配置された内胴(この考案の「ケーシング」に相 当する)である。この内胴2は段部21を介して前記外胴1の内壁面に溶接固定さ れている。3は支持枠であり、前記パッキン31を介して前記内胴2の段部21に載 置された状態でビス止めされている。この支持枠3はセラミック製炎口面板4の 周端部を支えている。5は押さえ枠であり、前記炎口面板4をパッキン41を介し て押さえた状態で前記内胴2の段部21に支持枠3とともにビスによって共締めさ れている。 In FIG. 1, 1 is an outer shell of the gas burner G (corresponding to the “casing” of the present invention), 2 is an inner shell arranged inside the outer shell 1 (corresponding to the “casing” of the present invention) Is. The inner case 2 is welded and fixed to the inner wall surface of the outer case 1 via a step portion 21. Reference numeral 3 denotes a support frame, which is fixed to the step portion 21 of the inner case 2 via the packing 31 with screws. The support frame 3 supports the peripheral end of the ceramic flame face plate 4. Reference numeral 5 is a holding frame, which is fastened together with the support frame 3 to the step portion 21 of the inner case 2 by means of screws in a state where the flame mouth face plate 4 is held by the packing 41.
【0011】 次に、61は混合室であり、前記内胴2内における前記炎口面板4の下方に配置 されている。この混合室61においては、ノズル7から供給された生ガスと送風機 8から供給された燃焼用空気とが混合される。混合された混合気は均圧板9によ って均圧化され、炎口面板の炎口から燃焼室62に流出し、燃焼される。Next, 61 is a mixing chamber, which is arranged in the inner case 2 below the flame face plate 4. In this mixing chamber 61, the raw gas supplied from the nozzle 7 and the combustion air supplied from the blower 8 are mixed. The mixed air-fuel mixture is pressure-equalized by the pressure equalizing plate 9, flows out to the combustion chamber 62 from the flame port of the flame port face plate, and is burned.
【0012】 次に、図2〜図4において、A,A,…炎口群であり、炎口面板4において一様に 分布している。この炎口群Aは所要数の内側炎口42,42,…を近接させ、その外周 を外周部炎口43,43,…によって囲むことにより構成されている。前記内側炎口42 は円柱状の透孔であり(図4参照のこと)、内径は略一定である。また、前記外 周部炎口43は流出口側の円柱状大径孔部431 と流入口側の円柱状小径孔部432 と から構成される。大径孔部431 の内径は前記内側炎口42の内径と略等しいが、小 径孔部432 の内径は前記内側炎口42の内径よりも小径である。即ち、前記外周部 炎口43の流出口の断面積は前記外周部炎口43の流入口断面積よりも大である。こ の結果、外周部炎口43から流出する混合気の流速を内側炎口42から流出する混合 気の流速よりも低下させることができる。Next, in FIGS. 2 to 4, there are A, A, ... Flame port groups, which are evenly distributed on the flame port face plate 4. This flame port group A is configured by bringing a required number of inner flame ports 42, 42, ... Close to each other, and surrounding the outer circumference by outer peripheral flame ports 43, 43 ,. The inner flame port 42 is a cylindrical through hole (see FIG. 4) and has a substantially constant inner diameter. Further, the outer peripheral flame port 43 is composed of a cylindrical large diameter hole portion 431 on the outlet side and a cylindrical small diameter hole portion 432 on the inlet side. The inner diameter of the large diameter hole portion 431 is substantially equal to the inner diameter of the inner flame opening 42, but the inner diameter of the small diameter hole portion 432 is smaller than the inner diameter of the inner flame opening 42. That is, the cross-sectional area of the outlet of the outer peripheral flame port 43 is larger than the cross-sectional area of the outer peripheral flame port 43. As a result, the flow velocity of the air-fuel mixture flowing out from the outer peripheral flame port 43 can be made lower than the flow velocity of the air-fuel mixture flowing out from the inner flame port 42.
【0013】 なお、ずにおいては、外周部炎口43における大径孔部431 と小径孔部432 との 連設部にはテーパを設けているが必ずしも設ける必要はない。In addition, in the above, in the outer peripheral flame port 43, the connecting portion of the large diameter hole portion 431 and the small diameter hole portion 432 is provided with a taper, but it is not always necessary.
【0014】 図5〜7に示すのは、他の実施例であり、炎口面板4の周縁部に枠状に所要数 の保炎炎口44,44,…を配置したものである。この保炎炎口44,44,…の構造は前記 外周部炎口43と実質的に同一であり、その機能も同様であるので説明は省略する 。なお、図5および図6において、Mは枠状の保炎炎口44群を示している。5 to 7 show another embodiment, in which a required number of flame holding flame openings 44, 44, ... Are arranged in a frame shape at the peripheral edge of the flame opening face plate 4. The structure of the flame holding flame ports 44, 44, ... Is substantially the same as that of the outer peripheral flame port 43, and the function thereof is also the same, so the description thereof will be omitted. 5 and 6, M denotes a frame-shaped flame holding flame port group 44.
【0015】[0015]
前記課題を達成するために、この考案に係るガスバーナ用炎口面板においては 、耐熱板体に所要数の炎口群を一様に分布させた状態で設けるとともにこの炎口 群を所要数の炎口を近接させることにより形成し、生ガスと加圧空気との混合気 を前記炎口から噴出させ、前記耐熱板体の表面で燃焼させるガスバーナ用炎口面 板において、 In order to achieve the above object, in the flame burner face plate for a gas burner according to the present invention, the heat-resistant plate is provided with a required number of flame port groups in a uniformly distributed state, and the flame port groups are provided with the required number of flame ports. In a flame burner face plate for a gas burner, which is formed by bringing the ports close to each other, a mixture of raw gas and pressurized air is jetted from the flame port and burned on the surface of the heat-resistant plate,
【0016】 前記炎口群における外周部炎口の混合気流入口断面積を混合気流出口断面積よ りも小としたため、Since the cross sectional area of the mixed air flow inlet of the outer peripheral flame nozzle in the flame nozzle group is smaller than the cross sectional area of the mixed air flow outlet,
【0017】 炎口群における外周部炎口から流出する混合気の流速を内部炎口から流出する 混合気の流速よりも低下させることができる。The flow velocity of the air-fuel mixture flowing out from the outer peripheral flame ports in the flame port group can be made lower than the flow velocity of the air-fuel mixture flowing out from the internal flame ports.
【0018】 よって、このガスバ−ナ用炎口面板を使用すれば、火炎のリフト現象の発生し やすい外周部炎口においてかかるリフト現象を押さえることができるため、不完 全燃焼を起こすことが少ないとともにリフト音を発生させることが少なく、この 結果、混合気の流量および空気比を広範囲に変化させても、炎口面板全体にわた って良好な燃焼を確保しやすいものである。Therefore, if this flame burner face plate for a gas burner is used, it is possible to suppress the lift phenomenon at the outer peripheral flame mouth where the lift phenomenon of the flame is likely to occur, so that incomplete combustion is less likely to occur. As a result, lift noise is rarely generated, and as a result, it is easy to ensure good combustion over the entire flame face plate even if the flow rate and air ratio of the air-fuel mixture are changed over a wide range.
【0019】 なお、前記耐熱板体の周縁部に枠状に所要数の保炎炎口を配置するとともにこ の保炎炎口の流入口断面積を同流出口断面積よりも小とすれば、さらに、外周部 炎口から流出する混合気の流速を内部炎口に流出する混合気の流速よりも低下さ せることができるため、炎口面板の外周部において上記効果をより一層向上させ ることができる。Further, if a required number of flame holding flame openings are arranged in a frame shape at the peripheral portion of the heat resistant plate and the inlet cross sectional area of the flame holding flame openings is made smaller than the same outlet cross sectional area, Since the flow velocity of the air-fuel mixture flowing out from the outer peripheral flame mouth can be made lower than the flow velocity of the air-fuel mixture flowing out into the inner flame mouth, the above effect can be further improved in the outer peripheral portion of the flame face plate. it can.
【図1】この考案のガスバーナ用保炎装置の断面図であ
る。FIG. 1 is a sectional view of a flame holding device for a gas burner according to the present invention.
【図2】図1におけるII矢視部分拡大図である。FIG. 2 is an enlarged view of a part indicated by an arrow II in FIG.
【図3】図2におけるIII 部拡大図である。FIG. 3 is an enlarged view of a part III in FIG.
【図4】図3におけるIV-IV 線断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG.
【図5】他の実施例における図1に相当する図である。FIG. 5 is a diagram corresponding to FIG. 1 in another embodiment.
【図6】図5におけるVI部拡大図である。FIG. 6 is an enlarged view of a VI portion in FIG.
【図7】図6におけるVII-VII 線断面図である。7 is a sectional view taken along line VII-VII in FIG.
4 … ガスバーナ用炎口面板 42 … 内側部炎口(炎口) 43 … 外周部炎口(炎口) 44 … 保炎炎口 A … 炎口群 G … ガスバーナ M … 保炎炎口群 4 ... Flame burner face plate for gas burner 42 ... Inner flame burner (flame burner) 43 ... Outer peripheral flame burner (flame burner) 44 ... Flame retaining flame burner A ... Flame burner group G ... Gas burner M ... Flame retaining flame burner group
Claims (2)
させた状態で設けるとともにこの炎口群を所要数の炎口
を近接させることにより形成し、生ガスと加圧空気との
混合気を前記炎口から噴出させ、前記耐熱板体の表面で
燃焼させるガスバーナ用炎口面板において、 前記炎口群における外周部炎口の混合気流入口断面積を
混合気流出口断面積よりも小としたことを特徴とするガ
スバーナ用炎口面板。1. A heat-resistant plate is provided with a required number of flame ports in a uniformly distributed state, and the flame ports are formed by bringing the required number of flame ports close to each other, and raw gas and pressurized air are provided. In a flame burner face plate for a gas burner that ejects a mixture of air from the flame burner and burns on the surface of the heat-resistant plate, a mixed air flow inlet cross-sectional area of the outer peripheral flame nozzles in the flame nozzle group from a mixed air flow outlet cross sectional area Flame burner face plate for gas burners, characterized by its small size.
保炎炎口を配置するとともにこの保炎炎口の流入口断面
積を同流出口断面積よりも小としたことを特徴とする請
求項1のガスバーナ用炎口面板。2. A required number of flame holding flame openings are arranged in a frame shape on the peripheral portion of the heat resistant plate, and an inlet cross sectional area of the flame holding flame openings is made smaller than the same outlet cross sectional area. The flame burner face plate for a gas burner according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3639693U JPH0712713U (en) | 1993-06-09 | 1993-06-09 | Flame burner faceplate for gas burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3639693U JPH0712713U (en) | 1993-06-09 | 1993-06-09 | Flame burner faceplate for gas burner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0712713U true JPH0712713U (en) | 1995-03-03 |
Family
ID=12468699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3639693U Pending JPH0712713U (en) | 1993-06-09 | 1993-06-09 | Flame burner faceplate for gas burner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0712713U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012180988A (en) * | 2011-03-02 | 2012-09-20 | Rinnai Corp | Combustion plate |
JP2013019639A (en) * | 2011-07-13 | 2013-01-31 | Rinnai Corp | Combustion device |
EP3012526A1 (en) | 2014-10-24 | 2016-04-27 | Rinnai Corporation | Combustion plate |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03195804A (en) * | 1989-12-25 | 1991-08-27 | Osaka Gas Co Ltd | Gas burner |
-
1993
- 1993-06-09 JP JP3639693U patent/JPH0712713U/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03195804A (en) * | 1989-12-25 | 1991-08-27 | Osaka Gas Co Ltd | Gas burner |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012180988A (en) * | 2011-03-02 | 2012-09-20 | Rinnai Corp | Combustion plate |
JP2013019639A (en) * | 2011-07-13 | 2013-01-31 | Rinnai Corp | Combustion device |
EP3012526A1 (en) | 2014-10-24 | 2016-04-27 | Rinnai Corporation | Combustion plate |
JP2016084955A (en) * | 2014-10-24 | 2016-05-19 | リンナイ株式会社 | Combustion plate |
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