JPS6210577Y2 - - Google Patents
Info
- Publication number
- JPS6210577Y2 JPS6210577Y2 JP1978079476U JP7947678U JPS6210577Y2 JP S6210577 Y2 JPS6210577 Y2 JP S6210577Y2 JP 1978079476 U JP1978079476 U JP 1978079476U JP 7947678 U JP7947678 U JP 7947678U JP S6210577 Y2 JPS6210577 Y2 JP S6210577Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- solenoid valve
- check valve
- valve
- combustion
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 239000000446 fuel Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Landscapes
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
- Feeding And Controlling Fuel (AREA)
Description
【考案の詳細な説明】
この考案は、燃焼停止時の後だれを防止するバ
ーナ配管の後だれ防止装置に関するものである。[Detailed Description of the Invention] This invention relates to a sag prevention device for burner piping that prevents sag when combustion is stopped.
従来のバーナ配管は、第１図のような配管、す
なわち先端にノズル１を備えた燃料供給管２の管
路にオイルポンプ３を設け、ノズル１とオイルポ
ンプ３との間に燃焼電磁弁４を設け、そしてオイ
ルポンプ３のリターン回路５を設けた配管構造で
ある。図中６は循環電磁弁であり、燃焼時には、
循環電磁弁６を閉じ、燃焼電磁弁４を開いてノズ
ル１より油を噴出させるように動作する。また燃
焼停止時には、オイルポンプ３を停止させ、循環
電磁弁６を開き、燃焼電磁弁４を閉じる。このと
き、燃焼電磁弁４とノズル１との間の油は加圧さ
れた状態となつており、このため、バーナ停止後
も油だれが発生し、炉内爆発の原因となつたり、
白煙が発生したり、ノズル部がよごれる等使用上
のトラブルが発生する。 In conventional burner piping, an oil pump 3 is installed in the piping as shown in FIG. This is a piping structure in which a return circuit 5 for an oil pump 3 is provided. 6 in the figure is a circulation solenoid valve, and during combustion,
The circulation solenoid valve 6 is closed, the combustion solenoid valve 4 is opened, and oil is ejected from the nozzle 1. When combustion is stopped, the oil pump 3 is stopped, the circulation solenoid valve 6 is opened, and the combustion solenoid valve 4 is closed. At this time, the oil between the combustion solenoid valve 4 and the nozzle 1 is in a pressurized state, so oil drips may occur even after the burner has stopped, causing an explosion in the furnace.
Problems may occur during use, such as white smoke being generated or the nozzle becoming dirty.
これを防止するため、第２図のように、ノズル
１の直ぐ上流に防滴弁７を設けたものが考案（実
開昭52−41030）されてはいたが、後だれを防止
するには充分でなかつた。なぜなら燃焼停止時に
オイルポンプ３を停止させても、これが直ちに停
止するわけでなく、慣性によりある程度の時間回
つているので残圧（背圧）が残り、循環電磁弁６
によりその残圧を逃がすようにしても、それまで
にはいくらか時間がかかる。このため普通、防滴
弁７のスプリング圧は、誤つた噴霧（バーナ未着
火時の噴霧）をさけ、閉め切り性能向上のために
５〜６Kg／cm2以上の圧力で作動するように設定さ
れており、オイルポンプ３の圧力を高くしなけれ
ばならないという欠点があつた。例えば、防滴弁
の開弁圧を６Kg／cm2噴霧圧力を８Kg／cm2とする
と、オイルポンプの設定圧力はほぼ６＋８＝14
Kg／cm2必要である。 In order to prevent this, a drip-proof valve 7 installed immediately upstream of the nozzle 1 as shown in Figure 2 was devised (Utility Model Application Publication No. 52-41030), but it was not possible to prevent dripping. It wasn't enough. This is because even if the oil pump 3 is stopped when combustion is stopped, it does not stop immediately, but because it continues to rotate for a certain amount of time due to inertia, residual pressure (back pressure) remains, and the circulation solenoid valve 6
Even if you try to release the residual pressure, it will take some time. For this reason, the spring pressure of the drip-proof valve 7 is normally set to operate at a pressure of 5 to 6 kg/cm 2 or higher to avoid erroneous spray (spray when the burner is not ignited) and to improve closing performance. Therefore, there was a drawback that the pressure of the oil pump 3 had to be increased. For example, if the opening pressure of the drip-proof valve is 6Kg/cm 2 and the spray pressure is 8Kg/cm 2 , the set pressure of the oil pump is approximately 6 + 8 = 14
Kg/ cm2 is required.
この考案は、以上のような欠点を解消すること
を目的としたもので、第３図のように、ノズル１
の直ぐ上流にスプリング式の逆止弁８を設け、さ
らに、燃焼電磁弁４のバイパスリターン回路９を
設けて、バイパスリターン回路９の管路に逆止弁
１０を設けたことを要旨とするものである。 This invention was aimed at eliminating the above-mentioned drawbacks, and as shown in Figure 3, the nozzle 1
A spring-type check valve 8 is provided immediately upstream of the combustion solenoid valve 4, and a bypass return circuit 9 for the combustion solenoid valve 4 is provided, and a check valve 10 is provided in the pipeline of the bypass return circuit 9. It is.
第４図は、逆止弁８として、スプリング式のも
のを用いる例を示したものである。 FIG. 4 shows an example in which a spring type check valve 8 is used.
この逆止弁はスプリングで開弁圧を設定するこ
とができるが、逆止弁８の開弁圧は、逆止弁１０
の開弁圧（逆止弁１０をスプリング式にした場
合）より高くする必要がある。例えば、逆止弁８
を２Kg／cm2に設定すれば、逆止弁１０は0.2Kg／
cm2程度に逆止弁８より低圧に設定する。勿論、オ
イルポンプ３の作動圧は、逆止弁８のそれよりも
高くなければ、逆止弁８のスプリング力に打ち勝
つてノズル１から燃料を噴霧することができな
い。 The opening pressure of this check valve can be set using a spring, but the opening pressure of the check valve 8 is different from that of the check valve 10.
(when the check valve 10 is of a spring type). For example, check valve 8
If is set to 2Kg/cm 2 , the check valve 10 will be 0.2Kg/cm2.
Set the pressure lower than check valve 8 to about cm 2 . Of course, unless the operating pressure of the oil pump 3 is higher than that of the check valve 8, it will not be possible to overcome the spring force of the check valve 8 and spray fuel from the nozzle 1.
以下、その作用について説明すると、燃焼停止
時において、燃焼電磁弁４が閉じ、循環電磁弁６
が開くと、燃焼電磁弁４の上流側の油圧は低下す
る。このとき逆止弁１０が開き、燃焼電磁弁４の
下流側の油圧がバイパスリターン回路９を通つて
逃げ急激に低下する。そして、油圧が逆止弁８の
設定圧（例えば２Kg／cm2）以下に低下するとまず
逆止弁８が閉じ、遅れて低圧（例えば、0.2Kg／
cm2）の逆止弁１０が閉じる。 The operation will be explained below. When combustion is stopped, the combustion solenoid valve 4 closes and the circulation solenoid valve 6 closes.
When the combustion solenoid valve 4 opens, the oil pressure on the upstream side of the combustion solenoid valve 4 decreases. At this time, the check valve 10 opens, and the hydraulic pressure on the downstream side of the combustion solenoid valve 4 escapes through the bypass return circuit 9 and drops rapidly. When the oil pressure drops below the set pressure of the check valve 8 (for example, 2Kg/cm 2 ), the check valve 8 closes first, and then the low pressure (for example, 0.2Kg/cm 2 ) is closed.
cm 2 ) is closed.
このような構成においては、燃焼電磁弁４のバ
イパスリターン回路９とこの回路中の逆止弁１０
との働きにより、ノズル１と燃焼電磁弁４間の圧
力いわゆる背圧を低下させるようにして、後だれ
を防することができる。 In such a configuration, a bypass return circuit 9 of the combustion solenoid valve 4 and a check valve 10 in this circuit are provided.
By this function, the pressure between the nozzle 1 and the combustion electromagnetic valve 4, so-called back pressure, can be reduced, and sag can be prevented.
したがつて、この考案におけるバーナの後だれ
防止装置は、噴霧圧力が同じ場合には、第２図の
ような従来のものと比べて、オイルポンプ３の圧
力を燃焼電磁弁４により直ちにカツトすることが
できるので、ノズル側の逆止弁８のスプリング圧
を１〜２Kg／cm2程度に低く設定することが可能で
あり、オイルポンプ３の圧力も低く設定すること
ができる（例えば、開弁圧２Kg／cm2＋噴霧圧８
Kg／cm2＝設定圧力10Kg／cm2）。よつて、使用ポン
プの小型化が図れるのみならず、事故が起こりに
くい。 Therefore, when the spray pressure is the same, the burner sag prevention device of this invention immediately cuts off the pressure of the oil pump 3 by the combustion solenoid valve 4, compared to the conventional device as shown in FIG. Therefore, the spring pressure of the check valve 8 on the nozzle side can be set low to about 1 to 2 kg/ cm2 , and the pressure of the oil pump 3 can also be set low (for example, when the valve is opened). Pressure 2Kg/cm 2 + spray pressure 8
Kg/cm 2 = set pressure 10Kg/cm 2 ). Therefore, not only can the pump used be made smaller, but accidents are less likely to occur.
また、第１図のような従来のものと比べると、
後だれが極めて少なく、効果が大である。 Also, compared to the conventional one as shown in Figure 1,
There is very little after-effects, and the effect is great.
ここではon−off制御のバーナについて説明し
たが、勿論この考案は、三位置制御のバーナにつ
いても適用できるものである。 Although the on-off control burner has been described here, this invention can of course also be applied to a three-position control burner.
第１図、第２図は従来のバーナの配管系統図で
あり、第３図はこの考案のバーナの配管系統図で
あり、第４図はスプリング式逆止弁を示した概略
断面図である。
１はノズル、２は燃料供給感、３はオイルポン
プ、４は燃焼電磁弁、５はリターン回路、６は循
環電磁弁、７は防滴弁、８はスプリング式逆止
弁、９はバイパスリターン回路、１０は逆止弁。
Figures 1 and 2 are piping system diagrams of a conventional burner, Figure 3 is a piping system diagram of the burner of this invention, and Figure 4 is a schematic sectional view showing a spring type check valve. . 1 is the nozzle, 2 is the fuel supply feeling, 3 is the oil pump, 4 is the combustion solenoid valve, 5 is the return circuit, 6 is the circulation solenoid valve, 7 is the drip-proof valve, 8 is the spring type check valve, 9 is the bypass return circuit, 10 is a check valve.
Claims (1)
イルポンプ３を、またノズル１とオイルポンプ３
との間に燃焼電磁弁４をそれぞれ設けるととも
に、オイルポンプ３のリターン回路５を設けたバ
ーナ配管において、ノズル１の直前にスプリング
式の逆止弁８を設ける一方、燃焼電磁弁４のバイ
パスリターン回路９を設け、かつこのバイパスリ
ターン回路中に、燃焼電磁弁４と逆止弁８間に残
存するところの逆止弁８の背圧として作用する圧
力をリターン回路５側に導くように働く逆止弁１
０を挿入したことを特徴とする後だれ防止装置。 An oil pump 3 is connected to the fuel supply pipe 2 which has a nozzle 1 at its tip, and the nozzle 1 and the oil pump 3 are connected to the fuel supply pipe 2.
In the burner piping, in which a combustion solenoid valve 4 is provided between the combustion solenoid valve 4 and a return circuit 5 of the oil pump 3, a spring-type check valve 8 is provided immediately before the nozzle 1, and a bypass return circuit of the combustion solenoid valve 4 is provided. A circuit 9 is provided, and in this bypass return circuit, there is a reverse circuit that acts to guide the pressure that remains between the combustion solenoid valve 4 and the check valve 8 and acts as a back pressure of the check valve 8 to the return circuit 5 side. Stop valve 1
A droop prevention device characterized by inserting a 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978079476U JPS6210577Y2 (en) | 1978-06-10 | 1978-06-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978079476U JPS6210577Y2 (en) | 1978-06-10 | 1978-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54180330U JPS54180330U (en) | 1979-12-20 |
| JPS6210577Y2 true JPS6210577Y2 (en) | 1987-03-12 |
Family
ID=28997476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978079476U Expired JPS6210577Y2 (en) | 1978-06-10 | 1978-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6210577Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2530136Y2 (en) * | 1991-08-23 | 1997-03-26 | 株式会社長府製作所 | Variable spray oil burner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241030B2 (en) * | 1973-01-29 | 1977-10-15 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241030U (en) * | 1975-09-17 | 1977-03-23 |
-
1978
- 1978-06-10 JP JP1978079476U patent/JPS6210577Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241030B2 (en) * | 1973-01-29 | 1977-10-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54180330U (en) | 1979-12-20 |
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