JPH0351624A

JPH0351624A - Safety device of combustion device

Info

Publication number: JPH0351624A
Application number: JP18711489A
Authority: JP
Inventors: Takahiro Nishi; 西　恭弘; Yukio Nakada; 幸雄中田; Shuji Inagaki; 修司稲垣; Makoto Ashikaga; 誠足利
Original assignee: Takagi Industrial Co Ltd
Current assignee: Takagi Industrial Co Ltd
Priority date: 1989-07-19
Filing date: 1989-07-19
Publication date: 1991-03-06

Abstract

PURPOSE:To prevent the pollution of the inside of a room by providing an exhaust gas cylinder with its upper section projecting and being received in a baffler at the ceiling section of a storage box for a combustion chamber which has a supply air section in its lower section. CONSTITUTION:When a back flow develops in the exhaust gas, it flow out of a backward wind flow-out section 10. At this time part of the backward wind is led directly to a pilot burner 7 through a backward wind guide tube 8. Accordingly the pilot burner is put off right away, and a solenoid valve is OFF. With this the supply of fuel is stopped and the combustion stops. With this constitution it is possible to prevent the pollution of the inside of a room and raise safety.

Description

【発明の詳細な説明】（産業上の利用分野）本発明は燃焼器具の安全装置に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a safety device for combustion appliances.

（従来の技術と問題点）排気ガスの逆流の原因は種々あるが、そのうちの一ツと
して、家屋の密閉化を挙げることができる。即ち、サッ
シ等の発達によって家屋が密閉化し、かかる密閉化状態
に於いて、例えば、第１図に示す如き燃焼器具を使用す
ると、排気ガスが排気筒から室内に逆流するおそれがあ
る。これは、例えば、台所等の換気扇を囲わすことによ
って、室杓が負圧になり、排気ガスが室内に逆流して室
内を汚染する例である。本発明は、かかる場合、燃焼器
具の燃焼を直ちに自動的に停止させ、室内の排気ガスか
らの汚染を未然に防止するものである。(Prior Art and Problems) There are various causes of backflow of exhaust gas, and one of them is the sealing of the house. That is, with the development of sashes and the like, houses have become hermetically sealed, and if a combustion appliance such as that shown in FIG. 1 is used in such a sealed state, there is a risk that exhaust gas may flow back into the room from the exhaust stack. This is an example of an example in which, for example, by enclosing a ventilation fan in a kitchen or the like, a negative pressure is created in the room, causing exhaust gas to flow back into the room and contaminate the room. In such a case, the present invention immediately and automatically stops combustion in the combustion appliance, thereby preventing pollution from indoor exhaust gas.

（発明の構戒）符号１は燃焼器具であって、２はこの燃焼器具１を収納
し、且つ下部に給気部３を設けた箱体である。該箱体ｌ
の天井部４に排気筒５を、その上部を突出させて設け、
該排気筒５の先端部はバフラ６内に装入し、前記ハフラ
６と、前記燃焼器具のパイ口ソトバーナ７との間に逆風
案内管８を設置する。符号９は邪魔板である。(Construction of the Invention) Reference numeral 1 denotes a combustion appliance, and numeral 2 denotes a box that houses the combustion appliance 1 and has an air supply section 3 at the bottom. The box l
An exhaust pipe 5 is provided on the ceiling part 4 of the exhaust pipe 5 with its upper part protruding,
The tip of the exhaust pipe 5 is inserted into a baffle 6, and a back wind guide pipe 8 is installed between the baffle 6 and the pie mouth soto burner 7 of the combustion appliance. Reference numeral 9 is a baffle plate.

（作　用）第２図（Ａ）は正常に排気している状態を示すが、第２
図（Ｂ）の場合には、逆流が生した場合を示す。第２図
（Ｂ）の場合に於いて、図中矢印の如き逆流が発生する
と、排気は逆風流出部ｌ０から流出するが、この流出と
同時に排気の一部は逆風案内管８を介して直接パイ口ソ
トバーナ７に流れて、パイロソト炎を直ちに消火する。(Function) Figure 2 (A) shows a state in which exhaust is normally performed, but the
Figure (B) shows a case where backflow occurs. In the case of FIG. 2(B), when a backflow occurs as shown by the arrow in the figure, the exhaust gas flows out from the backflow outflow part l0, but at the same time as this outflow, a part of the exhaust gas directly passes through the backflow guide pipe 8. It flows into the pie mouth soto burner 7 and extinguishes the pyrosoto flame immediately.

従って、サーモカップルが作用しなくなり、電磁弁１１
を閉止し、メインバーナー２が消火する。このようクに、バフラとパイ口ソトバーナｆ間に逆風案内管８を設
置した構或等により、逆風が発生しても、直ちに燃料ガ
スの供給を停止することができる。Therefore, the thermocouple does not work and the solenoid valve 11
is closed and main burner 2 is extinguished. In this way, by installing the back wind guide pipe 8 between the baffle and the pie opening soto burner f, even if a back wind occurs, the supply of fuel gas can be immediately stopped.

（発明の効果）本発明は以上の通り、排気ガスに逆流が生しても、それ
を燃焼器具に、即座に導いて燃料ガスを停止させる独特
の構或の採用により、室内空気の汚染を未然に防止でき
る優れた効果がある。(Effects of the Invention) As described above, the present invention prevents indoor air pollution by adopting a unique structure that immediately guides the exhaust gas to the combustion equipment and stops the fuel gas even if a backflow occurs in the exhaust gas. It has an excellent preventive effect.

[Brief explanation of drawings]

第ｌ図は従来装置の説明図、第２図（Ａ）．（Ｂ）は本
発明の概念的説明図である。符号１・・・燃焼器具、２・・・箱体、３・・・給気部
、４・・・天井部、５・・・排気筒、６・・・バフラ、
７・・・パイロソトバーナ、８・・・逆風案内管、９・
・・邪魔板、１０・・・逆風流出部、１１・・・電磁弁
、１２・・・メインバーナ。第１ ■ 第２図（Ａ） ’１２図（Ｂ）Fig. 1 is an explanatory diagram of a conventional device, and Fig. 2 (A). (B) is a conceptual explanatory diagram of the present invention. Code 1... Combustion appliance, 2... Box body, 3... Air supply part, 4... Ceiling part, 5... Exhaust pipe, 6... Baffler,
7... Pyrosoto burner, 8... Back wind guide pipe, 9...
... Baffle plate, 10... Backflow outflow section, 11... Solenoid valve, 12... Main burner. 1 ■ Figure 2 (A) '12 (B)

Claims

[Claims]

An exhaust pipe of the combustion equipment is provided on the ceiling of a box body that houses the combustion equipment and has an air supply section at the bottom, with its upper part protruding, and the tip of the exhaust pipe is inserted into a baffle, A safety device for a combustion appliance, comprising a back wind guide pipe installed between the baffle and a pilot burner of the combustion appliance.