JPH05180417A - Variable spray quantity oil burner - Google Patents
Variable spray quantity oil burnerInfo
- Publication number
- JPH05180417A JPH05180417A JP35880591A JP35880591A JPH05180417A JP H05180417 A JPH05180417 A JP H05180417A JP 35880591 A JP35880591 A JP 35880591A JP 35880591 A JP35880591 A JP 35880591A JP H05180417 A JPH05180417 A JP H05180417A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- return
- nozzle
- electromagnetic pump
- accumulator
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/04—Feeding or distributing systems using pumps
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、家庭用の給湯機、給
湯機付風呂釜等に使用する噴霧量可変石油バーナーにお
ける燃焼騒音低減のための脈動吸収手段に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulsation absorbing means for reducing combustion noise in a spray amount variable petroleum burner used for a domestic water heater, a bath with a water heater, and the like.
【０００２】[0002]
【従来の技術】この発明に技術的に最も近い従来例とし
ては、例えば図４に記載したものがある。これはリター
ンノズルよりの噴霧量の調整、すなわち燃油量の調整
は、圧力調整弁により最小噴霧量から最大噴霧量まで比
例的に行われるものであった。2. Description of the Related Art A conventional example technically closest to the present invention is shown in FIG. This is that the adjustment of the spray amount from the return nozzle, that is, the adjustment of the fuel oil amount is performed proportionally from the minimum spray amount to the maximum spray amount by the pressure control valve.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来例にあっては、電磁ポンプからリターンノズ
ル、あるいはリターンノズルから圧力調整弁の間の油経
路で発生する油の脈動吸収手段としては、電磁ポンプに
取り付けられたアキュームレータのみに依存する構造と
なっていた。However, in such a conventional example, as the pulsation absorbing means for the oil generated in the oil passage between the electromagnetic pump and the return nozzle or between the return nozzle and the pressure adjusting valve, The structure depended only on the accumulator attached to the electromagnetic pump.
【０００４】ここでバーナーの燃焼騒音を考えるに、燃
焼筒等の燃焼部の構造に起因する油の燃焼騒音とは別
に、ノズルから噴霧される油の脈動に起因する低周波の
燃焼騒音と言うのもかなり大きなウェイトを占めてい
た。Considering the combustion noise of the burner, in addition to the combustion noise of the oil caused by the structure of the combustion section such as the combustion cylinder, it is called the low-frequency combustion noise caused by the pulsation of the oil sprayed from the nozzle. Also had a fairly large weight.
【０００５】しかしながら上記電磁ポンプに取り付けら
れたアキュームレータだけでは、油経路の脈動を充分に
吸収する事ができず、このためリターンノズル入口、及
び戻り側の油の脈動の相互干渉により、燃焼時にこの脈
動に起因する不快な低周波音が発生するという問題点が
あった。However, only the accumulator attached to the electromagnetic pump cannot sufficiently absorb the pulsation of the oil passage, and therefore the mutual interference of the pulsation of the return nozzle inlet and the return side oil causes this There is a problem that an unpleasant low frequency sound is generated due to the pulsation.
【０００６】[0006]
【課題を解決するための手段】この発明は、このような
従来の問題点に着目してなされたもので、リターンノズ
ルの油戻路から圧力調整弁までの油経路中に、少なくと
も１つ以上のアキュームレータを取り付けるという構造
とすることにより、上記問題点を解決することを目的と
している。SUMMARY OF THE INVENTION The present invention has been made by paying attention to such a conventional problem, and at least one or more is provided in the oil path from the oil return path of the return nozzle to the pressure adjusting valve. It is an object of the present invention to solve the above-mentioned problems by adopting a structure in which the accumulator is attached.
【０００７】[0007]
【実施例】以下、この発明の実施例を図面に基づいて説
明する。図１は、この発明の一実施例を示す図である。
まず構成を説明すると、１は電磁ポンプであり、電磁ポ
ンプ１には油吐出側の油の圧力脈動を軽減する第１のア
キュームレータ１１が取り付けられる。電磁ポンプ１の
油吸入側は油送管７−１を介して油タンク４に接続さ
れ、油吐出側は油送管７−２を介して、内部に油往路８
と油戻路９を有したノズルホルダー２の油往路８側に接
続されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of the present invention.
First, the configuration will be described. 1 is an electromagnetic pump, and the electromagnetic pump 1 is provided with a first accumulator 11 that reduces pressure pulsation of oil on the oil discharge side. The oil suction side of the electromagnetic pump 1 is connected to the oil tank 4 via an oil feed pipe 7-1, and the oil discharge side is internally fed to the oil forward passage 8 via an oil feed pipe 7-2.
And the oil return path 9 is connected to the oil outward path 8 side of the nozzle holder 2.
【０００８】ノズルホルダー２の先端にはリターンノズ
ル３が接続され、また、ノズルホルダー２の油戻路９は
油戻管１０を介して油送管７−１の途中に接続されてい
る。油戻管１０の途中には油電磁弁５と圧力調整弁６、
第２のアキュームレータ１２が接続されている。A return nozzle 3 is connected to the tip of the nozzle holder 2, and an oil return passage 9 of the nozzle holder 2 is connected via an oil return pipe 10 to the middle of the oil feed pipe 7-1. In the middle of the oil return pipe 10, an oil solenoid valve 5 and a pressure adjusting valve 6,
The second accumulator 12 is connected.
【０００９】[0009]
【作用】次に作用を説明する。油タンク４から電磁ポン
プ１により吸入された油は加圧され、油送管７−２を通
じ、リターンノズル３に供給される。リターンノズル３
では、油の一部は噴霧され、残りは油電磁弁５、圧力調
整弁６等を通過して、電磁ポンプ１の入口側に戻され
る。[Operation] Next, the operation will be described. The oil sucked from the oil tank 4 by the electromagnetic pump 1 is pressurized and supplied to the return nozzle 3 through the oil feed pipe 7-2. Return nozzle 3
Then, a part of the oil is sprayed, and the rest passes through the oil electromagnetic valve 5, the pressure adjusting valve 6 and the like and is returned to the inlet side of the electromagnetic pump 1.
【００１０】リターンノズル３よりの油の噴霧量の調整
は、油戻管１０に取り付けられた圧力調整弁６によりリ
ターンノズル３の戻り側の圧力を調整する事により行わ
れる。電磁ポンプ１に取り付けた第１のアキュームレー
タ１１は、電磁ポンプ１に起因する脈動の大部分を吸収
するように作用する。また、油戻管１０の第２のアキュ
ームレータ１２は、電磁ポンプ１に起因するリターンノ
ズル３からの戻り路の脈動及び圧力調整弁６で発生する
脈動を吸収するように作用する。The amount of oil sprayed from the return nozzle 3 is adjusted by adjusting the pressure on the return side of the return nozzle 3 with a pressure adjusting valve 6 attached to the oil return pipe 10. The first accumulator 11 attached to the electromagnetic pump 1 acts so as to absorb most of the pulsation caused by the electromagnetic pump 1. Further, the second accumulator 12 of the oil return pipe 10 acts so as to absorb the pulsation of the return path from the return nozzle 3 caused by the electromagnetic pump 1 and the pulsation generated by the pressure regulating valve 6.
【００１１】ここで圧力調整弁６で発生する脈動につい
て、図２の圧力調整弁６の構造により説明する。圧力調
整弁６は駆動回路（図示せず）より電磁コイル１３に駆
動電流が印加され、この電流値を任意の値に可変する事
により、次式のようにリターンノズル３の戻り圧力の調
整を行うことができる。The pulsation generated in the pressure adjusting valve 6 will be described with reference to the structure of the pressure adjusting valve 6 shown in FIG. A drive current is applied to the electromagnetic coil 13 from a drive circuit (not shown), and the pressure adjusting valve 6 adjusts the return pressure of the return nozzle 3 by changing the current value to an arbitrary value according to the following equation. It can be carried out.
【００１２】 弁の開弁圧力＝バネの力（一定）−電磁コイルの励磁力
＝戻り路の圧力 この式により明らかなように、電磁コイル１３の励磁力
駆動電流を増やせば、電磁コイル１３の励磁力も増え、
戻り路の圧力は低くなるし、逆に減らせば戻り路の圧力
は高くなる。Valve opening pressure = spring force (constant) -electromagnetic coil exciting force = return path pressure As is clear from this equation, if the exciting force driving current of the electromagnetic coil 13 is increased, The excitation force also increases,
The pressure in the return path will be low, and conversely if it is reduced, the pressure in the return path will be high.
【００１３】電磁コイル１３に通電される駆動電流は、
直流をそのまま印加すると、電磁コイル１３のヒステリ
シスにより、電流の増加→減少、減少→増加時におい
て、同一電流値においても励磁力が異なってくるため、
このヒステリシスによる影響を防止する駆動電流として
は、矩形波によるパルス制御、デューティー制御、ある
いは直流に交流分を重畳するという様な制御が行われ
る。The drive current supplied to the electromagnetic coil 13 is
When a direct current is applied as it is, the exciting force becomes different at the same current value when the current increases, decreases, decreases, and increases due to the hysteresis of the electromagnetic coil 13.
As a drive current for preventing the influence of the hysteresis, pulse control by a rectangular wave, duty control, or control such as superimposing an alternating current component on a direct current is performed.
【００１４】しかしながら電磁コイル１３に流れる駆動
電流に上記の様な矩形波や交流波等の成分を持った矩形
波形が印加されると、プランジャー１４にはその波形の
周波数による縦振動が発生し、これにより戻り路の油に
電磁ポンプ１の脈動とは異なった脈動が発生する。これ
を第２のアキュームレータ１２で吸収しようとするわけ
である。However, when a rectangular waveform having a component such as a rectangular wave or an AC wave as described above is applied to the drive current flowing in the electromagnetic coil 13, the plunger 14 is longitudinally vibrated by the frequency of the waveform. As a result, pulsation different from the pulsation of the electromagnetic pump 1 is generated in the oil in the return path. This is to be absorbed by the second accumulator 12.
【００１５】また、バーナー停止時に第２のアキューム
レータ１２内に蓄積された圧力により油がリターンノズ
ル３側へ逆流し、後だれの原因となるが、本実施例では
アキュームレータ１２を油戻管１０の油電磁弁５と圧力
調整弁６の間に取り付け、電磁ポンプ１の停止と同時に
油電磁弁５を閉める事によって防止することができる。
また、リターンノズル３と油電磁弁５の間に取り付けた
としても、リターンノズル３までの途中に逆止弁（図示
せず）等の逆流防止手段を取り付ければ何ら問題はな
い。Further, when the burner is stopped, the pressure of the second accumulator 12 causes the oil to flow back to the return nozzle 3 side, which causes dripping. In the present embodiment, the accumulator 12 is connected to the oil return pipe 10. This can be prevented by mounting between the oil electromagnetic valve 5 and the pressure adjusting valve 6 and closing the oil electromagnetic valve 5 at the same time when the electromagnetic pump 1 is stopped.
Further, even if it is mounted between the return nozzle 3 and the oil electromagnetic valve 5, there will be no problem if a check valve (not shown) or other backflow preventing means is mounted midway up to the return nozzle 3.
【００１６】[0016]
【発明の効果】以上のように、この発明によれば、電磁
ポンプに取り付けた第１のアキュームレータと、油戻管
の途中の油電磁弁と圧力調整弁の間に第２のアキューム
レータを設けた構成としたので、油経路中で発生する脈
動に対し、電磁ポンプからリターンノズルまでの油往路
の脈動については、電磁ポンプに付属した第１のアキュ
ームレータで吸収し、リターンノズルから圧力調整弁の
油戻路の脈動については、油戻管に取り付けた第２のア
キュームレータにより吸収する事により、油の脈動に起
因する低周波の燃焼騒音を大幅に軽減できるという効果
が得られる。As described above, according to the present invention, the first accumulator attached to the electromagnetic pump and the second accumulator between the oil electromagnetic valve and the pressure adjusting valve in the middle of the oil return pipe are provided. Because of the configuration, the first accumulator attached to the electromagnetic pump absorbs the pulsation in the oil outward path from the electromagnetic pump to the return nozzle, while the pulsation generated in the oil path is absorbed by the oil from the return nozzle. The return passage pulsation is absorbed by the second accumulator attached to the oil return pipe, so that the low-frequency combustion noise caused by the oil pulsation can be significantly reduced.
【図１】本発明の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of the present invention.
【図２】本発明に使用する圧力調整弁の構造図である。FIG. 2 is a structural diagram of a pressure control valve used in the present invention.
【図３】本発明に使用する第１，第２のアキュームレー
タの構造図である。FIG. 3 is a structural diagram of first and second accumulators used in the present invention.
【図４】従来例を示す図である。FIG. 4 is a diagram showing a conventional example.
１ 電磁ポンプ ２ ノズルホルダー ３ リターンノズル ４ 油タンク ５ 油電磁弁 ６ 圧力調整弁 ７ 油送管 ８ 油往路 ９ 油戻路 １０ 油戻管 １１ 第１のアキュームレータ １２ 第２のアキュームレータ １３ 電磁コイル １４ プランジャー １５ バネ １６ 弁体 １７ 弁座 １８ ダイヤフラム １９ 受圧板 ２０ バネ ２１ アキュームレータ 1 Electromagnetic Pump 2 Nozzle Holder 3 Return Nozzle 4 Oil Tank 5 Oil Solenoid Valve 6 Pressure Adjustment Valve 7 Oil Feed Pipe 8 Oil Forward 9 Oil Return 10 Oil Return Pipe 11 First Accumulator 12 Second Accumulator 13 Electromagnetic Coil 14 Plan Jar 15 Spring 16 Valve body 17 Valve seat 18 Diaphragm 19 Pressure receiving plate 20 Spring 21 Accumulator
Claims (1)
油バーナーにおいて、リターンノズルからの油戻管の途
中に少なくとも１つ以上のアキュームレータを取り付け
た事を特徴とする噴霧量可変石油バーナー。1. A spray amount variable petroleum burner using a return nozzle, wherein at least one accumulator is attached in the middle of an oil return pipe from the return nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35880591A JPH05180417A (en) | 1991-12-28 | 1991-12-28 | Variable spray quantity oil burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35880591A JPH05180417A (en) | 1991-12-28 | 1991-12-28 | Variable spray quantity oil burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05180417A true JPH05180417A (en) | 1993-07-23 |
Family
ID=18461206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35880591A Pending JPH05180417A (en) | 1991-12-28 | 1991-12-28 | Variable spray quantity oil burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05180417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100657043B1 (en) * | 2005-02-26 | 2006-12-13 | 한국지역난방공사 | system for improving speed and response characteristic in stand-by pump when a fuel pump of district heating system was tripped |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421006A (en) * | 1977-07-18 | 1979-02-16 | Kawasaki Tetsumou Kk | Grid assembling retaining wall |
| JPH01105856A (en) * | 1987-09-11 | 1989-04-24 | Elkem As | Method of adding silica hume to dry type shitcrete mixture |
| JPH01122326A (en) * | 1987-11-02 | 1989-05-15 | Mitsubishi Electric Corp | Estimation of step-out |
-
1991
- 1991-12-28 JP JP35880591A patent/JPH05180417A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421006A (en) * | 1977-07-18 | 1979-02-16 | Kawasaki Tetsumou Kk | Grid assembling retaining wall |
| JPH01105856A (en) * | 1987-09-11 | 1989-04-24 | Elkem As | Method of adding silica hume to dry type shitcrete mixture |
| JPH01122326A (en) * | 1987-11-02 | 1989-05-15 | Mitsubishi Electric Corp | Estimation of step-out |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100657043B1 (en) * | 2005-02-26 | 2006-12-13 | 한국지역난방공사 | system for improving speed and response characteristic in stand-by pump when a fuel pump of district heating system was tripped |
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