JPH0118655Y2

JPH0118655Y2 -

Info

Publication number: JPH0118655Y2
Application number: JP1983074611U
Authority: JP
Priority date: 1983-05-20
Filing date: 1983-05-20
Publication date: 1989-05-31
Also published as: JPS59183903U

Description

【考案の詳細な説明】（技術分野）この考案は、古くなつたアスフアルトを剥離す
るのに先立ち、路面を加熱してアスフアルトを軟
化させ、剥離作業を容易に行なえるようにする路
面加熱用ヒータの火力を調節する火力調節装置に
関する。[Detailed description of the invention] (Technical field) This invention is a road surface heater that heats the road surface to soften the asphalt before stripping off old asphalt, making the stripping work easier. The present invention relates to a fire power adjustment device that adjusts the fire power of a fire.

（考案の背景）古くなり傷んだ路面のアスフアルト舗装を再舗
装する場合、まず古いアスフアルトを剥離しなけ
ればならない。この際、剥離作業を容易に行なえ
るようにするため、路面加熱用ヒータによりアス
フアルト路面を加熱し、アスフアルトを軟化させ
ることが行なわれている。このため、従来からプ
ロパンガスを燃料とした路面加熱用ヒータが種々
知られているが、燃料費節約の面から近年石油を
燃料とする路面加熱用ヒータ（例えば実開昭58−
134411号）も使用されるようになつて来た。(Background of the idea) When resurfacing old and damaged asphalt pavement, the old asphalt must first be peeled off. At this time, in order to facilitate the peeling work, the asphalt road surface is heated by a road surface heater to soften the asphalt. For this reason, various types of road surface heaters have been known that use propane gas as fuel, but in order to save on fuel costs, road surface heaters that use petroleum as fuel have recently been introduced (for example,
134411) has also come into use.

ところが、路面の状態は季節、或は現場の日当
り工合によつて異なり、常に同じ加熱条件で良い
とは限らない。更に季節、日照以外でも施工速度
その他で加熱条件を変えなければならない場合が
頻繁に生じる。ところが、幅広のアスフアルト路
面を有効に加熱するために、路面加熱器には多数
（８〜12本程度）の石油バーナが使用されており、
これらのバーナの燃焼量を一斉に変えることはガ
スバーナの場合に比べて困難になる。 However, the condition of the road surface varies depending on the season or the daily usage of the site, and it is not always possible to maintain the same heating conditions. Furthermore, it is frequently necessary to change heating conditions depending on the season, construction speed, and other factors other than sunlight. However, in order to effectively heat a wide asphalt road surface, a large number of oil burners (about 8 to 12) are used in road surface heaters.
It is more difficult to change the combustion amount of these burners all at once than in the case of gas burners.

（本考案の目的）本考案は上述のような事情に鑑み、路面加熱用
ヒータに組込まれた多数の石油バーナの燃焼量を
一斉に切換えることのできる路面加熱用ヒータの
火力調節装置を提供することを目的としている。(Purpose of the present invention) In view of the above-mentioned circumstances, the present invention provides a thermal power adjustment device for a road surface heating heater that can simultaneously switch the combustion amount of a large number of oil burners incorporated in the road surface heating heater. The purpose is to

（本考案の構成）本考案の路面加熱用ヒータの火力調節装置は、
燃料タンクからバーナに通じる送油管の途中に、
電動式の送油ポンプと通電時にのみ流路を閉じる
電磁弁とを並列に接続し、送油ポンプへの通電と
同時に電磁弁にも通電するように構成している。(Structure of the present invention) The firepower adjustment device for a road surface heating heater of the present invention has the following features:
In the middle of the oil pipe leading from the fuel tank to the burner,
An electric oil pump and a solenoid valve that closes a flow path only when energized are connected in parallel, and the solenoid valve is energized at the same time as the oil pump is energized.

（本考案の作用）上述のように構成される本考案の路面加熱用ヒ
ータの火力調節装置は、送油ポンプへの非通電時
には送油ポンプが作動せず、代りに電磁弁の流路
が開き、燃料タンク内の石油は重力及び燃焼装置
側で生じる吸引力によつてのみバーナに送り込ま
れて燃焼するため、燃料量従つて発熱量は比較的
少なくなるが、送油ポンプ及び電磁弁に通電し、
燃焼タンク内の石油を圧力を加えた状態でバーナ
に送り込むと、このバーナに於ける石油の噴射速
度が増すことによつて燃焼量が増し、従つて発熱
量も多くなる。(Operation of the present invention) In the road surface heating heater thermal power adjustment device of the present invention configured as described above, when the oil pump is not energized, the oil pump does not operate, and instead, the flow path of the solenoid valve is closed. When the fuel tank is opened, the oil in the fuel tank is sent to the burner and burned only by gravity and the suction force generated by the combustion device, so the amount of fuel and therefore the calorific value are relatively small, but the oil pump and solenoid valve energize,
When the oil in the combustion tank is fed into the burner under pressure, the injection speed of the oil in the burner increases, thereby increasing the amount of combustion and, therefore, the amount of heat generated.

（本考案の実施例）次に、図示の実施例を説明しつつ本考案を更に
詳しく説明する。(Embodiments of the present invention) Next, the present invention will be explained in more detail while explaining the illustrated embodiments.

図面は本考案の火力調節装置の実施例を示して
いる。高所に設けられた燃料タンク１の下部に一
端を接続した管６の途中には開閉弁２と燃料フイ
ルタ３とが設けられており、他端はモータ４によ
つて駆動される送油ポンプ５の吸入側に通じてい
る。上記管６の燃料フイルタ３と送油ポンプ５と
の間から一端を分岐した第二の管７の途中には、
通電時にのみ流路を閉じる電磁弁８を設けてい
る。この第二の管７の他端は、上記送油ポンプ５
の吐出側に一端を接続した第三の管９の途中に接
続している。第三の管９の他端には分岐管１０が
設けられており、管９を通じて送られて来る石油
をホース１１と第四の管１２とに均等に分配する
ようにしている。ホース１１に送られた石油は、
更に管１３、接続具１４、管１５、接続具１６を
介して、各石油バーナに付設した送込管１７，１
７にまで送られる。一方、分岐管１０から管１２
に送られた石油は、ホース１８、管１９、ホース
２０、管２１、接続具１４、管１５、接続具１６
を介して、各石油バーナに付設した送込管１７，
１７にまで送られる。 The drawings show an embodiment of the firepower adjustment device of the present invention. An on-off valve 2 and a fuel filter 3 are provided in the middle of a pipe 6 whose one end is connected to the lower part of a fuel tank 1 installed at a high place, and the other end is a fuel pump driven by a motor 4. It leads to the intake side of 5. In the middle of the second pipe 7, which has one end branched from between the fuel filter 3 and the oil feed pump 5 of the pipe 6,
A solenoid valve 8 is provided that closes the flow path only when energized. The other end of this second pipe 7 is connected to the oil pump 5
It is connected to the middle of a third pipe 9 whose one end is connected to the discharge side of the pipe. A branch pipe 10 is provided at the other end of the third pipe 9, so that the oil sent through the pipe 9 is evenly distributed between the hose 11 and the fourth pipe 12. The oil sent to hose 11 is
Further, via the pipe 13, the connector 14, the pipe 15, and the connector 16, the feed pipes 17, 1 attached to each oil burner are connected.
Sent to 7. On the other hand, from the branch pipe 10 to the pipe 12
The oil sent to
via the feed pipe 17 attached to each oil burner,
Sent to 17.

一方火力調節装置の制御盤には、２個のスイツ
チ２２，２３が設けられている。一方のスイツチ
２２は、送油ポンプ駆動用のモータ４と電磁弁８
とに同時に通電し、或は通電を停止し、他方のス
イツチ２３は上記電磁弁８にのみ通電し、或は通
電を停止するもので、他方のスイツチ２３は非常
時以外は通電停止状態としておく。 On the other hand, two switches 22 and 23 are provided on the control panel of the firepower adjustment device. One switch 22 is connected to the motor 4 and solenoid valve 8 for driving the oil pump.
The other switch 23 energizes or de-energizes only the solenoid valve 8 at the same time, and the other switch 23 is kept de-energized except in an emergency. .

上述のように構成される本考案の路面加熱用ヒ
ータの火力調節装置の作用は次の通りである。 The operation of the road surface heating heater thermal power adjustment device of the present invention configured as described above is as follows.

(a) 弱火状態この場合は、スイツチ２２、２３をいずれも通
電停止の状態とする。これにより、送油ポンプ５
は作動しないが電磁弁８は開いた状態となり、燃
料タンク１内の石油は重力と石油バーナ側で生じ
る吸引力とによつてのみこの石油バーナに送り込
まれる。即ち、石油バーナに於ける石油の燃料圧
力は比較的小さいものとなり、発熱量は小さくな
る。(a) Low flame state In this case, both switches 22 and 23 are turned off. As a result, the oil feed pump 5
does not operate, but the solenoid valve 8 is in an open state, and the oil in the fuel tank 1 is fed into the oil burner only by gravity and the suction force generated on the oil burner side. That is, the oil fuel pressure in the oil burner becomes relatively small, and the amount of heat generated becomes small.

(b) 強火状態この場合は、スイツチ２２を通電状態とする
（スイツチ２３の状態は関係ない。）。これにより、
電磁弁８は閉じられるが、送油ポンプ５が作動
し、燃料タンク１内の石油は重力とバーナ側で生
じる吸引力によつても送られるが主として送油ポ
ンプ５の働きによつて石油バーナに送り込まれ
る。このため、石油バーナに於ける石油の燃料圧
力は高くなり、燃料の噴射速度が増して発熱量が
大きくなる。石油バーナによる発熱量は、ほぼ燃
料圧力Ｐの平方根P^1/2に比例するため、石油バー
ナ自身が生じさせ得る燃料圧力（石油が送油ポン
プ５によつて強制的に送り込まれない場合の燃料
圧力）と送油ポンプ５の吐出圧力とを適当に定め
れば、ヒータの火力を十分高低に切換えることが
できるようになる。(b) High flame state In this case, the switch 22 is energized (the state of the switch 23 is irrelevant). This results in
Although the solenoid valve 8 is closed, the oil feed pump 5 operates, and the oil in the fuel tank 1 is sent to the oil burner by gravity and the suction force generated on the burner side, but mainly by the action of the oil feed pump 5. sent to. Therefore, the oil fuel pressure in the oil burner increases, the fuel injection speed increases, and the amount of heat generated increases. The amount of heat generated by the oil burner is approximately proportional to the square root P ^1/2 of the fuel pressure P. If the pressure) and the discharge pressure of the oil feed pump 5 are appropriately determined, the heating power of the heater can be switched between sufficiently high and low levels.

(c) 非常停止時何らかの原因で各バーナを一斉に消火しなけれ
ばならなくなつた場合（長時間使用を停止する場
合は開閉弁２を閉じる。）、スイツチ２３を通電状
態とし、スイツチ２２を通電停止状態とする。こ
れにより、送油ポンプ５は作動せず、電磁弁８が
閉じられた状態となつていずれのバーナにも燃料
が送られなくなる。(c) At the time of emergency stop If it becomes necessary to extinguish all burners all at once for some reason (if the use is to be stopped for a long time, close the on-off valve 2), energize the switch 23 and turn the switch 22 on. The power is turned off. As a result, the oil pump 5 does not operate, the solenoid valve 8 is closed, and fuel is not sent to any burner.

なお、図中２４，２５はスイツチ２２に付設さ
れ、強火状態と弱火状態とを表わす表示灯、２６
はエア抜き用管である。 In addition, in the figure, 24 and 25 are attached to the switch 22 and indicate indicator lights 26 and 26 indicating a high flame state and a low flame state.
is an air bleed tube.

（本考案の効果）本考案の路面加熱用ヒータの火力調節装置は以
上に述べた通り構成され作用するので、多数の石
油バーナを有する路面加熱用ヒータの火力調節を
迅速かつ容易に行なうことができ、路面を常に最
適な条件で加熱することができる。(Effects of the present invention) Since the firepower adjustment device for a road surface heating heater of the present invention is constructed and operates as described above, it is possible to quickly and easily adjust the firepower of a road surface heater having a large number of oil burners. This allows the road surface to be heated under optimal conditions at all times.

[Brief explanation of drawings]

図面は本考案の実施例を示す斜視図である。１……燃料タンク、２……開閉弁、３……燃料
フイルタ、４……モータ、５……送油ポンプ、
６，７……管、８……電磁弁、９……管、１０…
…分岐管、１１……ホース、１２，１３……管、
１４，１６……接続具、１５……管、１７……送
込管、１８，２０……ホース、１９，２１……
管、２２，２３……スイツチ、２４，２５……表
示灯、２６……エア抜き用管。 The drawing is a perspective view showing an embodiment of the present invention. 1...Fuel tank, 2...Opening/closing valve, 3...Fuel filter, 4...Motor, 5...Oil pump,
6, 7...Pipe, 8...Solenoid valve, 9...Pipe, 10...
... branch pipe, 11 ... hose, 12, 13 ... pipe,
14, 16... Connector, 15... Pipe, 17... Feed pipe, 18, 20... Hose, 19, 21...
Pipe, 22, 23...Switch, 24, 25...Indicator light, 26...Air bleed tube.

Claims

[Scope of utility model registration request]

A road surface heater having a large number of burners using oil as fuel has an electric oil pump 5 in the middle of one oil pipe that branches from a fuel tank 1 to a plurality of burners, and a flow path is provided only when electricity is applied. A single switch is inserted and connected to the closing solenoid valve 8 in a parallel circuit, energizes and de-energizes the oil pump and the solenoid valve at the same time, and is opened in a low flame state and an emergency stop, and closed in a high flame state. 22, and another switch 23 which controls the energization only to the solenoid valve 8, is opened to open the flow path of the solenoid valve 8 when the flame is low, and is closed during an emergency stop to close the flow path of the solenoid valve 8. The fuel tank 1 is located above the part where the oil feed pump and the solenoid valve are connected in parallel, and a large number of burners are located below this parallel connection part.