JPH0791650A - Return type nozzle burner - Google Patents
Return type nozzle burnerInfo
- Publication number
- JPH0791650A JPH0791650A JP26591493A JP26591493A JPH0791650A JP H0791650 A JPH0791650 A JP H0791650A JP 26591493 A JP26591493 A JP 26591493A JP 26591493 A JP26591493 A JP 26591493A JP H0791650 A JPH0791650 A JP H0791650A
- Authority
- JP
- Japan
- Prior art keywords
- return
- pressure
- pump
- constant
- type nozzle
- 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
Landscapes
- 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】本発明は、噴霧燃料の一部を噴霧
することなく戻り管路に戻すことができるリターン式ノ
ズルを備えたバーナ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner device having a return type nozzle capable of returning a part of atomized fuel to a return line without spraying it.
【０００２】[0002]
【従来の技術】図４に、この種リターン式ノズルバーナ
装置の従来例を示す。リターン式ノズル１に対して石油
タンク２から、石油供給管路３を、送油用低圧ポンプ
４、ヒータ５、流量制御弁６、高圧定差圧ポンプ７を経
て石油が供給されるようにされており、前記リターン式
ノズル１の戻り管路８は前記流量制御弁６と高圧定差圧
ポンプ７の間の石油供給管路３に接続されている。この
装置は一定差圧により石油を供給するシステムで、前記
送油用低圧ポンプ４と高圧定差圧ポンプ７を有している
のが特徴であり、噴霧流量は流量制御弁６によって高圧
定差圧ポンプ７の入口の圧力、即ちリターン式ノズル１
からの戻り管路８の圧力、即ちリターン式ノズル１の戻
り圧を調節することで調節される。一定差圧システム
は、定差圧ポンプの圧力・流量特性とノズル１の抵抗曲
線が平衡した点で運転されるため、差圧が一定になり、
良好な噴霧を行うことができる。2. Description of the Related Art FIG. 4 shows a conventional example of such a return type nozzle burner device. Oil is supplied from the oil tank 2 to the return type nozzle 1 through the oil supply line 3, the oil supply low-pressure pump 4, the heater 5, the flow control valve 6, and the high-pressure constant differential pressure pump 7. The return line 8 of the return type nozzle 1 is connected to the oil supply line 3 between the flow rate control valve 6 and the high pressure constant differential pressure pump 7. This device is a system that supplies oil at a constant differential pressure, and is characterized by having the low-pressure pump 4 for oil supply and a high-pressure constant differential pressure pump 7. The spray flow rate is controlled by a high-pressure constant difference by a flow control valve 6. The pressure at the inlet of the pressure pump 7, that is, the return type nozzle 1
It is adjusted by adjusting the pressure in the return line 8 from, that is, the return pressure of the return type nozzle 1. The constant differential pressure system operates at a point where the pressure / flow rate characteristics of the constant differential pressure pump and the resistance curve of the nozzle 1 are balanced, so the differential pressure becomes constant,
Good spraying can be performed.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記した定
差圧式の従来装置は、工業用の大型ボイラ用に開発され
たもので、小型の温水ボイラに用いるためには、高圧定
差圧ポンプ７の圧力を下げて、例えば20Kgf/cm2 から10
Kgf/cm2 に下げて使用する必要があり、その弊害とし
て、個々の要素のバラツキによって、噴霧流量のバラツ
キが大きくなるという問題を有していた。However, the above-mentioned conventional device of constant differential pressure type was developed for a large industrial boiler, and in order to use it for a small hot water boiler, a high pressure constant differential pressure pump 7 is used. Reduce the pressure, for example 20 Kgf / cm 2 to 10
It is necessary to lower the pressure to Kgf / cm 2 , and as a harmful effect, there is a problem that the dispersion of the spray flow rate becomes large due to the dispersion of individual elements.
【０００４】そこで、本発明は上記従来技術の欠点を解
消し、小型の温水ボイラとして噴霧流量のバラツキの少
ないリターン式ノズルバーナ装置の提供を目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a return-type nozzle burner device having a small spray flow rate variation as a small-sized hot water boiler.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明のリターン式ノズルバーナ装置は、石油燃料
を噴霧すると共に燃料の一部を戻り管路に戻すようにす
ることで噴霧流量を調節することができるリターン式ノ
ズルと、石油タンクから前記リターン式ノズルへ石油を
供給するための石油供給管路と、該石油供給管路の前記
リターン式ノズルに近い側に設けられる噴燃用定圧ポン
プと、石油供給管路の前記石油タンクに近い側に設けら
れる送油用定圧ポンプと、噴燃用定圧ポンプと送油用定
圧ポンプとの間の石油供給管路に設けられる流量制御弁
とを有し、前記戻り管路の戻り端を前記噴燃用定圧ポン
プと流量制御弁との間の石油供給管路に接続したリター
ン式ノズルバーナ装置であって、前記リターン式ノズル
はその戻り圧の低いものを用いると共に前記送油用定圧
ポンプはその吐出圧の大きいものを用いることで、前記
吐出圧と戻り圧との差圧を大に構成することを特徴とし
ている。In order to achieve the above object, the return type nozzle burner apparatus of the present invention adjusts the spray flow rate by spraying petroleum fuel and returning a part of the fuel to the return line. Return type nozzle, an oil supply line for supplying oil from an oil tank to the return type nozzle, and a constant pressure fuel injection pump provided on the side of the oil supply line near the return type nozzle A constant oil pressure pump for oil supply provided on the side of the oil supply line close to the oil tank, and a flow control valve provided in the oil supply line between the constant pressure pump for fuel injection and the constant pressure pump for oil supply. A return type nozzle burner device having a return end of the return line connected to an oil supply line between the constant pressure pump for fuel injection and a flow control valve, wherein the return type nozzle has a low return pressure. The said feed for oil pressure pump with use of by using the larger of the discharge pressure, is characterized by constituting a differential pressure between the discharge pressure and return pressure to atmospheric.
【０００６】[0006]
【作用】リターン式ノズルはその戻り圧の低いものを用
い、送油用定圧ポンプはその吐出圧の大きいものを用い
ることで、前記吐出圧と戻り圧との差圧が大となり、即
ち流量制御弁前後の差圧も大となる。この差圧が大であ
る場合には、小である場合に比べて、流量制御弁による
調節の誤差やバラツキ、即ち流量制御弁前後の差圧調整
の誤差やバラツキに対する噴霧流量の誤差やバラツキが
少なくなる。よって、石油供給管路の前記リターン式ノ
ズルに近い側に噴燃用定圧ポンプを用い、石油供給管路
の石油タンクに近い側に送油用定圧ポンプを用いて、小
型の温水ボイラに適用した場合においても、流量制御弁
前後の差圧の誤差やバラツキが、大きな噴霧流量の誤差
やバラツキとなって現れることがなくなる。[Function] By using the return type nozzle having a low return pressure and the constant oil pump having a large discharge pressure, the differential pressure between the discharge pressure and the return pressure becomes large, that is, the flow rate control. The differential pressure across the valve is also large. When this differential pressure is large, compared to the case where it is small, there are errors and variations in adjustment by the flow control valve, that is, errors and variations in the spray flow rate due to errors and differences in differential pressure adjustment before and after the flow control valve. Less. Therefore, the constant pressure pump for fuel injection was used on the side of the oil supply line near the return nozzle, and the constant pressure pump for oil supply was used on the side of the oil supply line near the oil tank for application to a small hot water boiler. Even in such a case, an error or variation in the differential pressure before and after the flow control valve does not appear as a large error or variation in the spray flow rate.
【０００７】[0007]
【実施例】図１は本発明装置の実施例を示す構成図、図
２はリターンノズルの戻り圧と噴霧流量との関係を説明
する図、図３は流量制御弁前後の差圧の誤差やバラツキ
と噴霧流量の誤差やバラツキとの関係を示すデータであ
る。FIG. 1 is a block diagram showing an embodiment of the device of the present invention, FIG. 2 is a diagram for explaining the relationship between the return pressure of the return nozzle and the spray flow rate, and FIG. 3 is an error in the differential pressure before and after the flow control valve. It is data showing the relationship between the variation and the error or variation in the spray flow rate.
【０００８】図１において、11は石油燃料を噴霧すると
共に燃料の一部を戻り管路18に戻すようにすることで噴
霧流量を調節することができるリターン式ノズルで、該
リターン式ノズル11に対して石油タンク12から、石油供
給管路13を、送油用定圧ポンプ14、流量制御弁16、噴燃
用定圧ポンプ17を直列的に経て石油が供給されるように
されており、前記リターン式ノズル11の戻り管路18は前
記流量制御弁16と噴燃用定圧ポンプ17の間の石油供給管
路13に接続されている。リターン式ノズル11に供給され
た石油はノズル穴から噴霧されると共に、一部は戻り管
路18に戻される。流量制御弁16を調整することで、噴燃
用定圧ポンプ17の入口圧、よって戻り管路18の戻り圧
（送油量）を制御する。In FIG. 1, reference numeral 11 denotes a return type nozzle which is capable of adjusting the flow rate of spraying by spraying petroleum fuel and returning a part of the fuel to the return pipe 18. On the other hand, oil is supplied from the oil tank 12 through the oil supply line 13, the oil feeding constant pressure pump 14, the flow rate control valve 16, and the fuel injection constant pressure pump 17 in series, and the return is made. The return line 18 of the formula nozzle 11 is connected to the oil supply line 13 between the flow control valve 16 and the constant pressure pump 17 for fuel injection. The oil supplied to the return type nozzle 11 is sprayed from the nozzle hole and part of it is returned to the return pipe line 18. By adjusting the flow control valve 16, the inlet pressure of the fuel injection constant pressure pump 17 and thus the return pressure (oil feed amount) of the return conduit 18 are controlled.
【０００９】前記リターン式ノズル11の戻り圧（ＰR ）
と噴霧流量の関係は、図２に示すように、一般的に戻り
圧（ＰR ）が低い（小さい）程噴霧流量が少ない。一
方、送油用定圧ポンプ14のポンプ圧（Ｐ2 ）と戻り圧
（ＰR ）との関係についてのデータを図３に示す。図３
から明らかなように、先ず流量制御弁16が同じ開度（図
では大、中、小の各開度について示している）であれ
ば、流量制御弁16前後の差圧、即ちＰ2 −ＰR の大きい
方が噴霧流量が大きい。一方、流量制御弁16前後の差圧
Ｐ2 −ＰR が小さい程差圧変化に対する噴霧流量の変化
が大きく、差圧Ｐ2 −ＰR が大きい程差圧変化に対する
噴霧流量の変化が小さい。従って、予め送油用定圧ポン
プ14はその吐出圧の大のものを用い、リターン式ノズル
11はその戻り圧の小さいものを用いることで、本来的に
送油用定圧ポンプ14はその吐出圧Ｐ2 と戻り圧ＰR との
差圧は大となり（流量制御弁16が同じ開度であれば、そ
の前後の差圧Ｐ2 −ＰR が大きくなるという意味）、よ
って流量制御弁16による調節の誤差やバラツキ、即ち流
量制御弁16前後の差圧調整の誤差やバラツキに対する噴
霧流量の誤差やバラツキが少なくなる。Return pressure (P R ) of the return type nozzle 11
As shown in FIG. 2, the relationship between the spray flow rate and the spray flow rate is generally such that the lower (smaller) the return pressure (P R ) is, the smaller the spray flow rate is. On the other hand, FIG. 3 shows data on the relationship between the pump pressure (P 2 ) and the return pressure (P R ) of the constant-pressure oil pump 14. Figure 3
As is apparent from the above, first, if the flow control valve 16 has the same opening (indicated for each large, medium, and small opening in the figure), the differential pressure before and after the flow control valve 16, that is, P 2 -P The larger R, the larger the spray flow rate. On the other hand, the change in the spray flow rate is increased for higher differential pressure change of the pressure difference P 2 -P R before and after the flow control valve 16 is small, the change in the spray flow rate to a small pressure difference P 2 -P R is large enough difference pressure change. Therefore, the constant-pressure pump 14 for oil supply has a large discharge pressure, and the return-type nozzle is used.
By using 11 which has a small return pressure, the constant pressure pump 14 for oil feeding originally has a large differential pressure between the discharge pressure P 2 and the return pressure P R (when the flow control valve 16 has the same opening degree). If so, it means that the differential pressure P 2 −P R before and after that increases. Therefore, the error or variation in the adjustment by the flow rate control valve 16, that is, the difference in the spray flow rate with respect to the error or the variation in the differential pressure adjustment before and after the flow rate control valve 16. Errors and variations are reduced.
【００１０】[0010]
【発明の効果】本発明は以上の構成、作用よりなり、請
求項１に記載のリターン式ノズルバーナ装置によれば、
リターン式ノズルはその戻り圧の低いものを用い、送油
用定圧ポンプはその吐出圧の大きいものを用いること
で、流量制御弁による調節の誤差やバラツキ、即ち流量
制御弁前後の差圧調整の誤差やバラツキに対する噴霧流
量の誤差やバラツキを少なくすることができ、よって、
石油供給管路の前記リターン式ノズルに近い側に噴燃用
定圧ポンプを用い、石油供給管路の石油タンクに近い側
に送油用定圧ポンプを用いて、噴燃用定圧ポンプでの高
圧噴霧ができないようにした小型の温水ボイラにおい
て、流量制御弁前後の差圧の誤差やバラツキによって
も、噴霧流量の誤差やバラツキが小さい、安定したもの
を提供することができる。According to the return type nozzle burner device of the present invention, the present invention has the above-mentioned structure and operation.
By using a return type nozzle with a low return pressure and a constant oil pressure pump with a large discharge pressure, adjustment errors and variations due to the flow control valve, that is, the differential pressure adjustment before and after the flow control valve It is possible to reduce the error and the variation of the spray flow rate with respect to the error and the variation.
A constant pressure pump for fuel injection is used on the side of the oil supply line near the return nozzle, and a constant pressure pump for oil supply is used on the side of the oil supply line near the oil tank for high-pressure spraying with the constant pressure pump for fuel injection. It is possible to provide a small-sized hot water boiler in which the spray flow rate is stable and has a small error or variation in the spray flow rate even if the error or variation in the differential pressure before and after the flow control valve.
【図１】本発明装置の実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of a device of the present invention.
【図２】リターンノズルの戻り圧と噴霧流量との関係を
説明する図である。FIG. 2 is a diagram illustrating a relationship between a return pressure of a return nozzle and a spray flow rate.
【図３】流量制御弁前後の差圧の誤差やバラツキと噴霧
流量の誤差やバラツキとの関係を示すデータである。FIG. 3 is data showing a relationship between an error or variation in differential pressure before and after a flow control valve and an error or variation in spray flow rate.
【図４】従来の装置を示す構成図である。FIG. 4 is a configuration diagram showing a conventional device.
11 リターン式ノズル 12 石油タンク 13 石油供給管路 14 送油用定圧ポンプ 16 流量制御弁 17 噴燃用定圧ポンプ 18 戻り管路 11 Return nozzle 12 Oil tank 13 Oil supply line 14 Constant pressure pump for oil supply 16 Flow control valve 17 Constant pressure pump for fuel injection 18 Return line
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平瀬 伸二 兵庫県神戸市中央区明石町32番地 株式会 社ノーリツ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Hirase 32 Akashi-cho, Chuo-ku, Kobe, Hyogo Prefecture
Claims (1)
戻り管路に戻すようにすることで噴霧流量を調節するこ
とができるリターン式ノズルと、石油タンクから前記リ
ターン式ノズルへ石油を供給するための石油供給管路
と、該石油供給管路の前記リターン式ノズルに近い側に
設けられる噴燃用定圧ポンプと、石油供給管路の前記石
油タンクに近い側に設けられる送油用定圧ポンプと、噴
燃用定圧ポンプと送油用定圧ポンプとの間の石油供給管
路に設けられる流量制御弁とを有し、前記戻り管路の戻
り端を前記噴燃用定圧ポンプと流量制御弁との間の石油
供給管路に接続したリターン式ノズルバーナ装置であっ
て、前記リターン式ノズルはその戻り圧の低いものを用
いると共に前記送油用定圧ポンプはその吐出圧の大きい
ものを用いることで、前記吐出圧と戻り圧との差圧を大
に構成することを特徴とするリターン式ノズルバーナ装
置。1. A return type nozzle capable of adjusting a spray flow rate by spraying petroleum fuel and returning a part of the fuel to a return line, and supplying oil from an oil tank to the return type nozzle. For supplying oil, a constant pressure pump for fuel injection provided on the side of the oil supply line near the return nozzle, and a constant pressure for oil supply provided on the side of the oil supply line near the oil tank. A flow control valve provided in the oil supply pipeline between the pump and the constant pressure pump for fuel injection and the constant pressure pump for oil supply, and the return end of the return pipeline is controlled by the constant pressure pump for fuel injection and flow rate control. A return-type nozzle burner device connected to an oil supply line between the valve and the valve, wherein the return-type nozzle has a low return pressure and the constant-pressure pump for oil supply has a high discharge pressure. so, A return type nozzle burner device characterized in that a large differential pressure between the discharge pressure and the return pressure is configured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26591493A JPH0791650A (en) | 1993-09-28 | 1993-09-28 | Return type nozzle burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26591493A JPH0791650A (en) | 1993-09-28 | 1993-09-28 | Return type nozzle burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0791650A true JPH0791650A (en) | 1995-04-04 |
Family
ID=17423858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26591493A Pending JPH0791650A (en) | 1993-09-28 | 1993-09-28 | Return type nozzle burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791650A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009295499A (en) * | 2008-06-06 | 2009-12-17 | Nippon Oil Corp | Fuel cell system and reforming system |
| JP2010003457A (en) * | 2008-06-18 | 2010-01-07 | Nippon Oil Corp | Fuel cell system |
-
1993
- 1993-09-28 JP JP26591493A patent/JPH0791650A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009295499A (en) * | 2008-06-06 | 2009-12-17 | Nippon Oil Corp | Fuel cell system and reforming system |
| JP2010003457A (en) * | 2008-06-18 | 2010-01-07 | Nippon Oil Corp | Fuel cell system |
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