JPS5966606A - Injection burner - Google Patents

Abstract

PURPOSE:To enable a flame to reach a long distance and prevent carbon produced from impurities in oil fuel from being adhered to a combustion opening at the burner by a method wherein the structure of combustion cylinder is improved. CONSTITUTION:In a burner in which oil fuel is injected into a nozzle 1 together with air, ignited in a combustion cylinder 2 and combustioned therein, an inner cylinder 3 having porous wall therein which is tapered to cause its extremity end to be narrowed is arranged in the combustion cylinder 2. Compressed air is fed into a secondary air feeding pipe 7, an outside part of the inner cylinder 3 in the cmbustion cylinder 2 shows a higher pressure to cause the secondary air to be injected through the porous wall in the inner cylinder 3. When the nozzle 1 is ignited, a flame A is enclosed by the secondary air injected therearound, while the flame is gradually narrowed due to the tapered inner cylinder 3, resulting in making a long flame. Further, the injection of the secondary air enclosing the flame prevents the carbon from being adhered to the inner cylinder and so a life of the burner is extended.

Description

【発明の詳細な説明】 この発明は、火足を長く遠くへ達するようにすることと
、バーナーの火口に油燃料の不純物等から生じるところ
のカーボンが附着しないように開発された噴射バーナー
に関するものである。[Detailed Description of the Invention] This invention relates to an injection burner that has been developed to allow the flame to reach a long distance and to prevent carbon generated from impurities in oil fuel from adhering to the burner crater. It is.

瓦等の焼物や焼成加工に用いるバーナーで、例えば横穴
状のかまどの奥に火■を到達せしめるには、必然的に火
足の長いバーナーが要求される。A burner used for pottery such as roof tiles or firing process requires a burner with a long flame, for example, in order to make the flame reach the depths of a horizontal furnace.

従来、火足を長くするには、供給空気の圧力を高めるこ
とも当然ながら、加えて燃料筒の口を絞る手段がとられ
た。その場合火■の噴口には耐火力の強力な材質が要求
され、必然的に脆くもなればその部分にカーボン等の附
着物の累積を生じ、これが火■噴射の口を塞いだ。その
ために燃料油には灯油の如く精製されたものが要求され
たが、本発明では安価な重油の使用を希うものである。Conventionally, in order to increase the length of a fire, it was natural to increase the pressure of the supplied air, but in addition, measures were taken to narrow the opening of the fuel cylinder. In this case, the fire nozzle was required to be made of a material with strong fire resistance, and if the material inevitably became brittle, deposits such as carbon would accumulate in that part, which blocked the fire nozzle. For this reason, refined fuel oil such as kerosene has been required, but the present invention prefers to use inexpensive heavy oil.

第１図は従来のバーナーの断面図を示し、１はノズル、
２は燃焼筒、８は火口にして、火口８は絞られるため特
に耐火物で装置されていた。Figure 1 shows a cross-sectional view of a conventional burner, where 1 is a nozzle;
2 is a combustion tube, 8 is a crater, and since the crater 8 can be constricted, it was specially made of refractory material.

第２図は、本発明に係る噴射バーナーの一実施例を示し
、ノズル１に油燃料を空気と共に噴出し燃焼筒２内に点
火し燃焼する如くしたバーナーにおいて、燃焼筒２内に
先端が細るテーパー状をなすところの多孔壁の内筒３を
設け、該内筒３を外側から貫く二次空気の供給機構を構
成してなるものである。なお図中４は点火プラグ、５は
ノズル１への給油管、６は同じく一次空気の送入管、７
は二次空気の送入管である。二次空気送入管７には圧搾
空気が挿入され、燃焼筒２内の内筒３の外側が高圧とな
り内筒３の多孔壁を貫通して二次空気が噴出する如く構
成されている。FIG. 2 shows an embodiment of the injection burner according to the present invention. In the burner, oil fuel is injected together with air into the nozzle 1 and ignited in the combustion tube 2 for combustion. An inner cylinder 3 having a tapered porous wall is provided, and a mechanism for supplying secondary air passing through the inner cylinder 3 from the outside is constructed. In the figure, 4 is a spark plug, 5 is a fuel supply pipe to nozzle 1, 6 is a primary air supply pipe, and 7 is a fuel supply pipe to nozzle 1.
is the secondary air supply pipe. Compressed air is inserted into the secondary air inlet pipe 7, and the outside of the inner cylinder 3 in the combustion cylinder 2 becomes high pressure, so that the secondary air penetrates the porous wall of the inner cylinder 3 and blows out.

従って本発明を実施すれば、ノズル１へ点火して燃える
火■Ａが周囲から噴出する二次空気に包まれる状態とな
り、内管３がテーパー状をなすため次第に火■は絞られ
て火足が長く噴出する状態となる。而して火■を包む二
次空気の噴出は内管への不燃物（カーボン等）の附着を
妨げる好結果を生み、バーナーの寿命延長にもつながる
ものである。Therefore, if the present invention is carried out, the fire A that ignites the nozzle 1 and burns will be surrounded by secondary air blowing out from the surroundings, and since the inner tube 3 has a tapered shape, the fire A will gradually be narrowed down and will erupt for a long time. The ejection of secondary air surrounding the fire (2) has the advantage of preventing non-combustible materials (carbon, etc.) from adhering to the inner pipe, and extends the life of the burner.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来品の断面図、第２図は本発明の一実施例を
示す断面図である。 １　ノズル ２　燃焼筒 ３　内筒 特許出願人　　有限会社川上窯業所FIG. 1 is a sectional view of a conventional product, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1 Nozzle 2 Combustion cylinder 3 Inner cylinder Patent applicant Kawakami Ceramics Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] ノズル（１）から油燃料を空気と共に噴出し、燃焼筒（
２）内に点火する如くした噴射バーナーにおいて、燃焼
筒（２）内に先端が細るテーパー状をなすところの多孔
壁の内筒（３）を設け、該内筒（３）の壁を貫く二次空
気の供給機構を構成した噴射バーナー。Oil fuel is ejected from the nozzle (1) together with air, and the combustion tube (
2) In an injection burner in which ignition occurs inside the combustion tube (2), an inner tube (3) with a porous wall and a tapered tip is provided inside the combustion tube (2). The injection burner that constitutes the secondary air supply mechanism.