JPS635642B2 - - Google Patents
Info
- Publication number
- JPS635642B2 JPS635642B2 JP57188592A JP18859282A JPS635642B2 JP S635642 B2 JPS635642 B2 JP S635642B2 JP 57188592 A JP57188592 A JP 57188592A JP 18859282 A JP18859282 A JP 18859282A JP S635642 B2 JPS635642 B2 JP S635642B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- air
- burner
- combustion
- air inlet
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Description
【発明の詳細な説明】
本発明は先混合式のガスバーナのガスノズルに
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas nozzle for a premix gas burner.
LPG系等発熱量が高く、また比重が大きいガ
ス燃料においては、燃焼停止に際し燃料の供給を
遮断しても即時に完全消火せず、ガスノズル本体
内と遮断弁からバーナまでのガス供給管に残留す
る燃料ガスが徐々にガス噴出口から流出してあと
燃えすることが多い。これは比重が大きい為空気
との置換が早く比較的早いスピードで残留ガスが
流れ出すことと、そのガスの発熱量が高いため自
燃力が強く、火が消えにくいことによるものであ
る。 Gas fuels with high calorific value and high specific gravity, such as LPG, do not extinguish completely even if the fuel supply is cut off when combustion is stopped, and remain in the gas nozzle body and the gas supply pipe from the shutoff valve to the burner. In most cases, the fuel gas gradually flows out from the gas outlet and burns afterward. This is because the residual gas flows out at a relatively fast speed due to its high specific gravity, and because the residual gas has a high calorific value, it has a strong self-combustion power and is difficult to extinguish.
しかし乍ら、強制的に燃焼させているものでは
ない為に（その他空気不足になる場合もある）こ
のあと燃えは不完全燃焼の状態になり、これ等の
ガス燃料は炭素分を多く含むことからすすが発生
する結果となる。同時にこの不完全燃焼ガスは比
重が軽いためそのまゝバーナ内に逆流してバーナ
のガスノズル本体内やその供給配管内等ガス通路
にすすとして堆積する弊害を生ずることになる。 However, since it is not forced to burn (there may be other cases where there is a lack of air), the combustion is incomplete, and these gas fuels contain a large amount of carbon. This results in the formation of soot. At the same time, since this incompletely combusted gas has a low specific gravity, it flows back into the burner and accumulates as soot in the gas passages, such as within the gas nozzle body of the burner and its supply piping.
この点に鑑み開発された本発明の先混合式のガ
スバーナのガスノズルは燃料遮断により速やかに
消火していわゆるあと燃えをなくするように工夫
したものである。即ちガス噴出口付近に空気導入
口を穿孔し、燃焼停止後ポストパージ（炉内掃
気）のためしばらく送り続けられる空気により燃
料ガス通路にエアカーテンを作つて残留ガスの流
出を防害し、速やかに消火するものである。なお
この時若干のガス分が流出しても極端な過剰空気
となりガスと空気の混合比が可燃限界からはずれ
るために火は消える。 The gas nozzle of the pre-mixing type gas burner of the present invention, developed in view of this point, is designed to quickly extinguish the fire by cutting off the fuel and eliminate so-called afterburning. In other words, an air inlet is drilled near the gas outlet, and after the combustion has stopped, air is continuously sent for a while for post-purging (furnace scavenging) to create an air curtain in the fuel gas passage to prevent residual gas from leaking out, and to quickly It is meant to extinguish a fire. Even if a small amount of gas leaks out at this time, there will be an extremely large excess of air, which will cause the mixture ratio of gas and air to deviate from the flammable limit, and the fire will go out.
以下本発明の先混合式のガスバーナのガスノズ
ルを例示の図面に就いて詳細に説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The gas nozzle of the pre-mixing type gas burner of the present invention will be explained in detail below with reference to the drawings.
ガスノズル本体１において、燃焼室に向けて開
口しているガス噴出口２，２…を形成する板１３
の上流側の直前にに（ガス供給元側を上流と言
い、従つてバーナは最下流に位置することにな
る）ガスノズル本体の内筒１Ａ及び外筒１Ｂに空
気導入口３，３…、４，４…を穿孔し、ガス流と
直交するように空気をガスノズル内に導入する。 In the gas nozzle main body 1, a plate 13 forming gas jet ports 2, 2, . . . that are open toward the combustion chamber.
Air inlets 3, 3..., 4 are provided in the inner cylinder 1A and outer cylinder 1B of the gas nozzle body immediately before the upstream side of the gas nozzle body (the gas supply source side is called upstream, and therefore the burner is located at the most downstream position). , 4... are bored and air is introduced into the gas nozzle so as to be perpendicular to the gas flow.
上記空気導入口はそこからガスノズル内に流入
する空気がガス６流を遮蔽する膜を形成するよう
にガスノズル本体の内筒及び外筒に夫々列状に配
置する。即ち空気導入口３，３…からは一次空気
７が分割流入し、空気導入口４，４…からは二次
空気８が分割流入してガスノズル本体内において
ガス噴出口をふさぐように空気膜を形成する。９
は一次空気からの導入空気、１０は二次空気から
の導入空気である。 The air inlets are arranged in rows in the inner cylinder and the outer cylinder of the gas nozzle body, respectively, so that the air flowing into the gas nozzle from the air inlets forms a membrane that blocks the flow of gas 6. That is, the primary air 7 flows in portions from the air inlets 3, 3, . Form. 9
10 is the air introduced from the primary air, and 10 is the air introduced from the secondary air.
これによりガスノズル本体１内及びガス供給管
５内の残留ガスのガス噴出口からの流出を止めあ
と燃えを防止するものである。なお第１図中１１
は羽根（ベーン）、１２は燃焼筒である。 This stops the residual gas in the gas nozzle body 1 and the gas supply pipe 5 from flowing out from the gas outlet, thereby preventing afterburning. Note that 11 in Figure 1
12 is a vane, and 12 is a combustion tube.
なお前記に於いて、ガス噴出口２，２を形成す
る板１３を設ける理由は下記による。 In the above description, the reason why the plate 13 forming the gas jet ports 2, 2 is provided is as follows.
50×104Kcal／ｈ以上の如きガス燃焼量が大容
量のとき、ガスの通路は流れ抵抗を小さくするた
め大きな断面積を有せしめることが必要である
が、このガス噴出口を形成する板がなければ、ガ
スの動圧を静圧にかえてガスを均一に噴出させ、
以つてガスと空気を均一にまぜることが出来な
い。 When the amount of gas burned is large, such as 50×10 4 Kcal/h or more, the gas passage needs to have a large cross-sectional area to reduce flow resistance, but the plate forming the gas outlet If there is no gas, the dynamic pressure of the gas is changed to static pressure and the gas is ejected uniformly.
Therefore, gas and air cannot be mixed uniformly.
又燃焼を停止させるとき、ガス噴出口を形成す
る板がなければ、板による噴出口の抵抗がないた
め、遮断弁から下流側に滞留する大量のガスが自
然に流れ出てうまく火を消すことが出来ない。 Furthermore, when stopping combustion, if there is no plate forming the gas outlet, there will be no resistance from the plate, so a large amount of gas stagnant on the downstream side from the shutoff valve will naturally flow out, making it difficult to successfully extinguish the fire. Can not.
更に又、ガスはその種類によつて発熱量、燃焼
速度がちがい、これの影響が大きいが、ガス噴出
口を形成する板がなければ、これを調整すること
が出来ない。 Furthermore, the calorific value and combustion rate of gas vary depending on the type, and this has a large effect, but this cannot be adjusted without a plate forming the gas jet port.
なお又前記に於いて、内筒１Ａ及び外筒１Ｂを
設ける理由は下記による。 Furthermore, in the above, the reason for providing the inner cylinder 1A and the outer cylinder 1B is as follows.
即ちガス燃焼量が大容量のとき、内外両筒を設
け中心と外周から空気を分割供給し（中心からの
ものを１次空気、外周からのものを２次空気と便
宜上呼んだ）、両者でガスをはさむことによつて
短時間でよくガスと空気が混ざる様にしたもので
ある。 In other words, when the amount of gas burned is large, both the inner and outer cylinders are provided to supply air separately from the center and the outer periphery (for convenience, air from the center is called primary air, and air from the outer periphery is called secondary air). By sandwiching the gas, it is possible to mix the gas and air well in a short time.
そして内筒１Ａ側の空気導入口３と外筒１Ｂ側
の空気導入口４の両方から空気を送るようにした
理由はエアカーテンを完壁にするためであり、一
方からだけだと締切りが効果が少い。 The reason why air is sent from both the air inlet 3 on the inner cylinder 1A side and the air inlet 4 on the outer cylinder 1B side is to make the air curtain complete. There are few
第２図はガス供給管ユニツトの例を示しＡは燃
料遮断後ガス噴出口から流れ出す残留ガスの滞留
範囲を示す。なお第２図中２１はガストレーナ、
２２は遮断弁、２３はガス量調節弁、２４はバー
ナ止弁、２５はフレームアレスタ、２６はパイロ
ツトコツク、２７はガス、２８はコツク、２９は
ガス圧下限スイツチ、３０はガス圧上限スイツ
チ、３１はガス圧力計、３２はガス圧力計、３３
はコントロールモータ、３４はバーナ本体、３５
はガスノズルである。 FIG. 2 shows an example of a gas supply pipe unit, and A indicates the retention range of residual gas flowing out from the gas outlet after fuel cutoff. In addition, 21 in Figure 2 is the gas strainer,
22 is a shutoff valve, 23 is a gas amount control valve, 24 is a burner stop valve, 25 is a flame arrester, 26 is a pilot cock, 27 is a gas, 28 is a cock, 29 is a gas pressure lower limit switch, 30 is a gas pressure upper limit switch, 31 is a gas pressure gauge, 32 is a gas pressure gauge, 33
is the control motor, 34 is the burner body, 35
is a gas nozzle.
第１図は本発明のガスノズルを説明する縦断面
図、第２図はガス供給管ユニツトを説明する図を
夫々例示している。
１……ガスノズル本体、１Ａ……内筒、１Ｂ…
…外筒、２……ガス噴出口、３……空気導入口、
４……空気導入口、５……ガス供給管、６……ガ
ス、７……一次空気、８……二次空気、９……一
次空気からの導入空気、１０……二次空気からの
導入空気、１１……羽根（ベーン）、１２……燃
焼筒、１３……ガス噴出口を形成する板。
FIG. 1 is a longitudinal sectional view illustrating a gas nozzle of the present invention, and FIG. 2 is a view illustrating a gas supply pipe unit. 1...Gas nozzle body, 1A...Inner cylinder, 1B...
...outer cylinder, 2...gas outlet, 3...air inlet,
4...Air inlet, 5...Gas supply pipe, 6...Gas, 7...Primary air, 8...Secondary air, 9...Air introduced from primary air, 10...Introduction from secondary air Introduced air, 11... Vane, 12... Combustion cylinder, 13... Plate forming a gas ejection port.
Claims (1)
２を形成する板１３の上流側の直前に空気導入口
を設け、その空気導入口は空気がガス流と略直角
方向に噴出するような位置に且つ噴出空気流がガ
ス流を遮ぎる膜を形成するように多数を列状に配
置されてなることを特徴とするガスバーナのガス
ノズル。1. In a pre-mixing type gas burner, an air inlet is provided just before the upstream side of the plate 13 that forms the gas outlet 2, and the air inlet is located at a position where air is ejected in a direction substantially perpendicular to the gas flow. A gas nozzle for a gas burner, characterized in that a large number of the gas nozzles are arranged in a row so that the ejected air flow forms a film that blocks the gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18859282A JPS5977213A (en) | 1982-10-26 | 1982-10-26 | Gas nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18859282A JPS5977213A (en) | 1982-10-26 | 1982-10-26 | Gas nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5977213A JPS5977213A (en) | 1984-05-02 |
| JPS635642B2 true JPS635642B2 (en) | 1988-02-04 |
Family
ID=16226354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18859282A Granted JPS5977213A (en) | 1982-10-26 | 1982-10-26 | Gas nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5977213A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0596725U (en) * | 1992-04-21 | 1993-12-27 | 巌 長沢 | Nozzle structure of small and simple gas stove |
| US20250060095A1 (en) * | 2023-08-14 | 2025-02-20 | Air Products And Chemicals, Inc. | Burner and Method of Operation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS471744U (en) * | 1971-01-21 | 1972-08-19 | ||
| JPS5151483U (en) * | 1974-10-16 | 1976-04-19 | ||
| JPS5236277U (en) * | 1975-09-06 | 1977-03-15 |
-
1982
- 1982-10-26 JP JP18859282A patent/JPS5977213A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5977213A (en) | 1984-05-02 |
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