JP2005325695A - Engine drive work device - Google Patents

Engine drive work device Download PDF

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JP2005325695A
JP2005325695A JP2004142482A JP2004142482A JP2005325695A JP 2005325695 A JP2005325695 A JP 2005325695A JP 2004142482 A JP2004142482 A JP 2004142482A JP 2004142482 A JP2004142482 A JP 2004142482A JP 2005325695 A JP2005325695 A JP 2005325695A
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engine
air
cooling
radiator
air cooler
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JP3931305B2 (en
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Shinichiro Tochio
信一郎 栃尾
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Nishishiba Electric Co Ltd
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Nishishiba Electric Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine drive work device, in which drive loss of a cooling fan is reduced to improve operation efficiency. <P>SOLUTION: This engine drive work device is composed of an engine, a supercharger driven by exhaust gas of the engine to supply compression air, an air cooler to cool compression air supplied by the supercharger to be supplied to the engine, a radiator to cool cooling water for the engine, a cooling fan to supply cooling air to the air cooler and the radiator, a work machine driven by the engine, and a control device to control the engine and the work machine. The radiator and the air cooler are installed in parallel to the flow of cooling air. Drive loss of the cooling fan is thus reduced. Thereby, operation efficiency of the engine drive work device is improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、エンジン駆動作業装置に係り、特にエンジンの排ガスを圧縮する過給機を備えたエンジン駆動作業装置に関する。   The present invention relates to an engine-driven work device, and more particularly to an engine-driven work device provided with a supercharger that compresses engine exhaust gas.

従来のエンジン駆動作業装置は、エンジンの冷却水を冷却する放熱器と、エンジンの排ガスによって駆動され圧縮空気を供給する過給機と、過給機が供給する圧縮空気を冷却する空気冷却器を装備している。   A conventional engine-driven work device includes a radiator that cools engine cooling water, a supercharger that is driven by engine exhaust gas to supply compressed air, and an air cooler that cools compressed air supplied by the supercharger. Equipped.

従来のエンジン駆動作業装置の概要を図５および図６を参照して説明する。
図５はエンジン駆動作業装置の内部構成を側面から見た側断面図、図６は上から見た上面図である。従来のエンジン駆動作業装置は、エンジン１と、エンジン１によって駆動される作業機２と、エンジン１および作業機２を制御する制御盤３と、エンジン駆動作業装置を構成する機器を収納し風雨から保護する筐体４とを装備している。 An outline of a conventional engine-driven work device will be described with reference to FIGS.
FIG. 5 is a side sectional view of the internal configuration of the engine-driven working device as seen from the side, and FIG. 6 is a top view as seen from above. A conventional engine-driven work device houses an engine 1, a work machine 2 driven by the engine 1, a control panel 3 that controls the engine 1 and the work machine 2, and equipment that constitutes the engine-driven work device. It equips with the housing | casing 4 to protect.

また、過給機５は排気集合管６によってエンジン１の排気口に接続されていて、排気集合管６によって集められたエンジン１の排気ガスによって駆動され、吸気フィルタ７、および管８を介して燃焼用の空気を吸引し圧縮して高密度にする作用をしている。過給機５を出た排気ガスは管９によって消音器１０に導かれ音の大きさを減衰させ、さらに排気管１１によって大気へ放出される。過給機５によって断熱圧縮された燃焼用空気は１５０〜２５０℃の高温状態であり、管１２によって導かれた空気冷却器１３において、冷却ファン１４によって送風される冷却空気１５と熱交換し、４０〜１００℃に冷却されてから、管１６、および吸気集合管１７を経てエンジン１に供給される。   Further, the supercharger 5 is connected to the exhaust port of the engine 1 by an exhaust collecting pipe 6, is driven by the exhaust gas of the engine 1 collected by the exhaust collecting pipe 6, and passes through an intake filter 7 and a pipe 8. It acts to suck and compress the combustion air to make it dense. The exhaust gas exiting the supercharger 5 is guided to the silencer 10 by the pipe 9, attenuates the loudness, and is further released to the atmosphere by the exhaust pipe 11. The combustion air adiabatically compressed by the supercharger 5 is in a high temperature state of 150 to 250 ° C., and exchanges heat with the cooling air 15 blown by the cooling fan 14 in the air cooler 13 guided by the pipe 12. After being cooled to 40 to 100 ° C., it is supplied to the engine 1 through the pipe 16 and the intake manifold pipe 17.

空気冷却器１３により燃焼用空気を冷却することで燃焼用空気の密度が増加するので、空気冷却器１３を装備しない場合よりも、エンジン１の効率は２〜５％向上し、定格出力も１５〜２５％向上する。エンジン１から送り出される８０〜１００℃になった冷却水が、管１８を経て放熱器１９に導かれ、冷却空気１５と熱交換し、７０〜９０℃に冷やされ、管２０によって再びエンジン１に供給される。冷却ファン１４はエンジン１によって駆動される場合もあるし、電動モータで駆動される場合もある。図５ではエンジン１のクランク軸端に取り付けられたプーリー２１、およびベルト２２によって冷却ファン１４を駆動する構成を示している。   Since the density of the combustion air is increased by cooling the combustion air with the air cooler 13, the efficiency of the engine 1 is improved by 2 to 5% and the rated output is 15 as compared with the case where the air cooler 13 is not provided. Improve by ~ 25%. The cooling water that has been sent from the engine 1 to 80 to 100 ° C. is led to the radiator 19 through the pipe 18, exchanges heat with the cooling air 15, is cooled to 70 to 90 ° C., and is again sent to the engine 1 by the pipe 20. Supplied. The cooling fan 14 may be driven by the engine 1 or may be driven by an electric motor. FIG. 5 shows a configuration in which the cooling fan 14 is driven by a pulley 21 and a belt 22 attached to the crankshaft end of the engine 1.

作業機２はエンジン駆動作業装置が設置される場所、および用途によって空気圧縮機、発電機、溶接機等が選択される。エンジン１には作業機２が接続されており、所望の作業ができるように構成されている。制御盤３はエンジン１、および作業機２をエンジン駆動作業装置の状態に応じて適切な状態に保つ制御を行っている。筐体４はエンジン駆動作業装置を構成する機器を収納し、風雨から保護すると同時に、筐体４内に取り込まれた空気が適切な順路を通って排出されるように通風路の役割も兼ね備えている。図中の矢印は空気の流れを示している。   As the work machine 2, an air compressor, a generator, a welder, or the like is selected depending on the place where the engine-driven work device is installed and the application. A work machine 2 is connected to the engine 1 so that a desired work can be performed. The control panel 3 performs control to keep the engine 1 and the work implement 2 in an appropriate state according to the state of the engine-driven work device. The housing 4 houses equipment that constitutes the engine-driven work device, protects it from wind and rain, and at the same time has a role of a ventilation path so that air taken into the housing 4 is discharged through an appropriate route. Yes. The arrows in the figure indicate the air flow.

上記した従来のエンジン駆動作業装置において、空気冷却器１３と放熱器１９は冷却空気１５の流れる方向に対して直列に配置されている。すなわち、空気冷却器１３は、エンジン１および作業機２の発する熱を換気したため、外気に比べて１０〜２０℃温度が上昇した冷却空気１５によって冷却されている。また、放熱器１９は、空気冷却器１３を冷却したために空気冷却器１３の直前に比べて１０〜２０℃温度が上昇した冷却空気１５によって冷却されている。そのため、空気冷却器１３、および放熱器１９が所定の冷却能力を発揮できるようにするには、外気で直接冷却する場合に比べると、１．５〜２倍に達する冷却空気１５の流量が必要となっている。また、空気冷却器１３、および放熱器１９を直列に配置しているため、そこを通過する冷却空気１５の圧力損失が大きくなり、冷却ファン１４が発生しなくてはならない圧力も大きくなってしまう。したがって、大風量、かつ高圧力の冷却空気１５を発生させるために冷却ファン１４は大きな直径と高速な回転速度を必要とし、その駆動損失はエンジン１の定格出力の４〜１０％にも達している。このことはエンジン駆動作業装置の運転効率を低下させる原因となっている。   In the above-described conventional engine-driven work device, the air cooler 13 and the radiator 19 are arranged in series with respect to the direction in which the cooling air 15 flows. That is, since the air cooler 13 ventilates the heat generated by the engine 1 and the work implement 2, the air cooler 13 is cooled by the cooling air 15 whose temperature is increased by 10 to 20 ° C. compared to the outside air. In addition, the radiator 19 is cooled by the cooling air 15 whose temperature has been increased by 10 to 20 ° C. compared to immediately before the air cooler 13 because the air cooler 13 has been cooled. Therefore, in order to allow the air cooler 13 and the radiator 19 to exhibit a predetermined cooling capacity, the flow rate of the cooling air 15 that is 1.5 to 2 times that of the case of direct cooling with outside air is required. It has become. Further, since the air cooler 13 and the radiator 19 are arranged in series, the pressure loss of the cooling air 15 passing therethrough increases, and the pressure that the cooling fan 14 must generate also increases. . Accordingly, the cooling fan 14 requires a large diameter and a high rotational speed in order to generate a large amount of air and high pressure cooling air 15, and its driving loss reaches 4 to 10% of the rated output of the engine 1. Yes. This is a cause of reducing the operating efficiency of the engine-driven work device.

冷却ファン１４の駆動損失を低減しエンジン駆動作業装置の運転効率を向上させる方法については、例えば特許文献１が開示されている。このエンジン駆動作業機は、冷却空気の導風構造に特徴を有するもので、電動ファン、およびエンジン駆動冷却ファンを装備したうえで、空気冷却器、および放熱器を熱的に互いに影響のない位置へ配置したものである。しかし、この方法では、エンジン室を換気したことで外気に比べて温度が上昇した冷却空気によって空気冷却器を冷却しているので、その分だけ冷却空気の風量は多くなってしまい、冷却ファンの駆動損失は増加してしまう。
特開２００２−００４８５７号公報 For example, Patent Document 1 discloses a method for reducing the driving loss of the cooling fan 14 and improving the operating efficiency of the engine-driven work device. This engine-driven work machine has a feature in the structure of air flow for cooling air, and is equipped with an electric fan and engine-driven cooling fan, and the air cooler and the radiator are located at positions that do not affect each other thermally. It is arranged. However, in this method, the air cooler is cooled by the cooling air whose temperature has risen compared to the outside air by ventilating the engine room, so the air volume of the cooling air increases accordingly, and the cooling fan Drive loss increases.
JP 2002-004857 A

本発明は、上記情況に対処するためになされたもので、その課題は冷却ファンの駆動損失を低減することで運転効率を向上させたエンジン駆動作業装置を提供することである。   The present invention has been made to cope with the above-described situation, and an object thereof is to provide an engine-driven work device in which operation efficiency is improved by reducing drive loss of a cooling fan.

前記課題を解決するために、請求項１に記載の発明は、エンジンと、前記エンジンの排気ガスによって駆動され圧縮空気を供給する過給機と、前記過給機によって供給される圧縮空気を冷却し前記エンジンに供給する空気冷却器と、前記エンジンの冷却水を冷却する放熱器と、前記空気冷却器と前記放熱器へ冷却空気を供給する冷却ファンと、前記エンジンによって駆動される作業機と、前記エンジンおよび前記作業機を制御する制御装置とから構成されるエンジン駆動作業装置であって、前記放熱器と前記空気冷却器を冷却空気の流れに対し並列に設置したことを特徴とする。   In order to solve the above problem, the invention according to claim 1 is an engine, a supercharger that is driven by exhaust gas of the engine to supply compressed air, and cools the compressed air supplied by the supercharger. An air cooler that supplies the engine, a radiator that cools the cooling water of the engine, a cooling fan that supplies cooling air to the air cooler and the radiator, and a work machine driven by the engine An engine-driven work device comprising a control device for controlling the engine and the work machine, wherein the radiator and the air cooler are installed in parallel with a flow of cooling air.

請求項１記載の発明によると、空気冷却器、および放熱器を冷却空気の流れに対して並列に設置したので冷却ファンの駆動損失を低減させることができ、これにより運転効率を向上させることができる。   According to the first aspect of the present invention, since the air cooler and the radiator are installed in parallel with the flow of the cooling air, the driving loss of the cooling fan can be reduced, thereby improving the operation efficiency. it can.

請求項２に記載の発明は、請求項１記載のエンジン駆動作業装置において、冷却ファンの回転方向、および回転速度を可変制御可能な冷却ファン制御装置を設けたことを特徴とする。
請求項２記載の発明によると、請求項１の効果に加え、電動冷却ファンの回転方向、および回転速度を可変とすることで、空気冷却器、および放熱器へのゴミの付着によるエンジン駆動作業装置の効率、および出力の低下を防止し、また、付着した場合であっても取り除くことで運転効率を向上させることができる。 According to a second aspect of the present invention, in the engine-driven work device according to the first aspect, a cooling fan control device capable of variably controlling the rotation direction and the rotation speed of the cooling fan is provided.
According to the second aspect of the invention, in addition to the effect of the first aspect, the rotational direction and the rotational speed of the electric cooling fan can be made variable so that the engine driving operation is performed due to dust adhering to the air cooler and the radiator. It is possible to prevent a reduction in the efficiency and output of the apparatus, and to improve the operation efficiency by removing even if it adheres.

請求項３に記載の発明は、請求項１記載のエンジン駆動作業装置において、放熱器と空気冷却器の少なくとも一方に洗浄液を噴霧する噴霧装置を備えたことを特徴とする。
請求項３記載の発明によると、請求項１の効果に加え、空気冷却器、および放熱器へ洗浄液を噴霧することで、空気冷却器、および放熱器に付着したゴミによるエンジン駆動作業装置の効率、および出力の低下を防止し、また、付着した場合であっても取り除くことで運転効率を向上させることができる。 According to a third aspect of the present invention, in the engine-driven work device according to the first aspect, a spray device for spraying the cleaning liquid onto at least one of the radiator and the air cooler is provided.
According to the third aspect of the invention, in addition to the effect of the first aspect, the efficiency of the engine drive work device due to dust adhering to the air cooler and the radiator is obtained by spraying the cleaning liquid onto the air cooler and the radiator. In addition, it is possible to prevent a decrease in output and to improve the operation efficiency by removing even if it adheres.

本発明によれば、冷却ファンの駆動損失を低減することが可能となり、運転効率を向上させたエンジン駆動作業装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to reduce the drive loss of a cooling fan and can provide the engine drive work apparatus which improved the operation efficiency.

以下、本発明を実施するための最良の形態について説明する。
（第１の実施形態）
図１は本発明の第１実施形態のエンジン駆動作業装置の側断面図であり、図２は図１を上から見た上面図である。 Hereinafter, the best mode for carrying out the present invention will be described.
(First embodiment)
FIG. 1 is a side sectional view of an engine-driven work device according to a first embodiment of the present invention, and FIG. 2 is a top view of FIG. 1 viewed from above.

本実施形態が既に説明した図５、および図６と相違する構成は、空気冷却器１３、および放熱器１９を分離し、それぞれが独立して冷却されるように冷却空気の流れに対して並列に設置できるように、筐体４の両側面に空気冷却器１３、および放熱器１９を設置し、その通風部分に相対する筐体４の側壁にそれぞれ、空気取入口２９、および空気取入口３０として開口部を設けたことと、空気冷却器１３、および放熱器１９を設置した空間と、エンジン１、作業機２、および制御盤３を設置した空間を分離し、それぞれ電動冷却ファン２７、および換気扇２８で冷却を行うようにしたことである。この場合、空気冷却器１３を冷却する冷却空気２５、および放熱器１９を冷却する冷却空気２６の流れ方向は、筐体４の側面から上方へ向かうようにすると、エンジン駆動作業装置の近くにいる作業者が冷却空気２５、および冷却空気２６を浴びなくてすむため好適である。すなわち、本実施形態において、冷却空気２５は筐体４の側面に設けられた空気取入口２９から吸込み、電動冷却ファン２７により上方に排出されるようにする。同様に、冷却空気２６も空気取入口３０から吸込み、筐体４の上方に排出するようにする。電動冷却ファン２７、および換気扇２８は図示しない冷却ファン制御装置により回転速度および回転方向は制御されており、電動冷却ファンおよび換気扇は１台でも複数台であっても冷却効果は同じである。   5 and FIG. 6 in which the present embodiment has already been described separates the air cooler 13 and the radiator 19 and is parallel to the flow of cooling air so that each is cooled independently. The air cooler 13 and the heat radiator 19 are installed on both side surfaces of the housing 4 so that the air intake 29 and the air intake 30 are respectively provided on the side walls of the housing 4 facing the ventilation portion. And the space in which the air cooler 13 and the radiator 19 are installed and the space in which the engine 1, the work machine 2, and the control panel 3 are installed are separated, and the electric cooling fan 27 and That is, cooling is performed by the ventilation fan 28. In this case, the flow directions of the cooling air 25 for cooling the air cooler 13 and the cooling air 26 for cooling the radiator 19 are close to the engine-driven work device when directed upward from the side surface of the housing 4. This is preferable because the operator does not have to take the cooling air 25 and the cooling air 26. That is, in the present embodiment, the cooling air 25 is sucked from the air intake port 29 provided on the side surface of the housing 4 and is discharged upward by the electric cooling fan 27. Similarly, the cooling air 26 is also sucked from the air intake 30 and discharged above the housing 4. The rotation speed and direction of the electric cooling fan 27 and the ventilation fan 28 are controlled by a cooling fan control device (not shown), and the cooling effect is the same regardless of whether one or more electric cooling fans and ventilation fans are used.

本実施形態のエンジン駆動作業装置を運転すると、空気取入口２９、および空気取入口３０から筐体４の外側の温度が低い外気を冷却空気２５、および冷却空気２６として電動冷却ファン２７によって取り込んで、空気冷却器１３、および放熱器１９を冷却することができる。したがって、冷却空気２５、および冷却空気２６の風量は従来の冷却空気に比べて１／２〜２／３に減少させることができる。また、風量が少なくなったことに加えて、空気冷却器１３、および放熱器１９を分離し並列に配置することによって、冷却空気の圧力損失を１／１０〜１／３に低減させることができる。冷却ファンの駆動損失はその風量、および圧力の積に比例するため、電動冷却ファン２７の駆動損失は、従来の冷却ファン１４に比べて１／２０〜２／９に低減することができる。   When the engine-driven work device of this embodiment is operated, the outside air having a low temperature outside the housing 4 from the air intake port 29 and the air intake port 30 is taken in as the cooling air 25 and the cooling air 26 by the electric cooling fan 27. The air cooler 13 and the radiator 19 can be cooled. Therefore, the air volume of the cooling air 25 and the cooling air 26 can be reduced to 1/2 to 2/3 as compared with the conventional cooling air. Further, in addition to the reduction of the air volume, the pressure loss of the cooling air can be reduced to 1/10 to 1/3 by separating the air cooler 13 and the radiator 19 and arranging them in parallel. . Since the driving loss of the cooling fan is proportional to the product of the air volume and the pressure, the driving loss of the electric cooling fan 27 can be reduced to 1/20 to 2/9 compared to the conventional cooling fan 14.

以上説明したように本実施形態によれば、空気冷却器、および放熱器を冷却空気の流れに対して並列に設置したことによって冷却ファンの駆動損失を低減させることで、運転効率を向上させたエンジン駆動作業装置を提供できる。   As described above, according to this embodiment, the operating efficiency is improved by reducing the driving loss of the cooling fan by installing the air cooler and the radiator in parallel with the flow of the cooling air. An engine-driven work device can be provided.

（第２の実施形態）
本発明の第２の実施形態のエンジン駆動作業装置の構成は第１の実施形態と同様であるので、図１、および図２を参照して説明する。 (Second Embodiment)
The configuration of the engine-driven work device according to the second embodiment of the present invention is the same as that of the first embodiment, and will be described with reference to FIGS. 1 and 2.

本実施形態においては、電動冷却ファン２７の回転方向、および回転速度を可変とする。空気冷却器１３、および放熱器１９にゴミが付着し、冷却空気２５、および冷却空気２６の風量が減少した場合には、エンジン駆動作業装置を停止し、電動冷却ファン２７を逆転させることによりゴミ２３を取り除く。こうすることにより、正常時の効率、および出力でエンジン駆動作業装置の運転が再開できる。また、冬季等において外気が低下し、冷却空気２５、および冷却空気２６の風量を低減できる場合には、電動冷却ファン２７の回転速度を低減することで、枯葉等のゴミ２３の吸込みを低減することができ、エンジン駆動作業装置の効率、および出力が低下する危険を少なくできる。   In the present embodiment, the rotation direction and rotation speed of the electric cooling fan 27 are variable. When dust adheres to the air cooler 13 and the radiator 19 and the air volume of the cooling air 25 and the cooling air 26 is reduced, the engine drive working device is stopped and the electric cooling fan 27 is reversed to remove the dust. 23 is removed. By doing so, the operation of the engine-driven work device can be resumed with normal efficiency and output. In addition, when the outside air decreases in the winter season or the like and the air volume of the cooling air 25 and the cooling air 26 can be reduced, the rotational speed of the electric cooling fan 27 is reduced to reduce the suction of the dust 23 such as dead leaves. This can reduce the efficiency of the engine-driven work device and the risk of a decrease in output.

以上説明したように本実施形態によれば、請求項１の効果に加え、電動冷却ファンの回転方向、および回転速度を可変としたことで、空気冷却器、および放熱器へのゴミの付着によるエンジン駆動作業装置の効率、および出力の低下を防止し、また、付着した場合であっても取り除くことで運転効率を向上させたエンジン駆動作業装置を提供できる。   As described above, according to the present embodiment, in addition to the effect of the first aspect, the rotation direction and the rotation speed of the electric cooling fan are made variable so that dust is attached to the air cooler and the radiator. It is possible to provide an engine-driven work device that prevents a reduction in the efficiency and output of the engine-driven work device and improves the operation efficiency by removing even if it adheres.

（第３の実施形態）
図３は本発明の第３の実施形態のエンジン駆動作業装置の側断面図、図４は図３を上から見た上面図である。 (Third embodiment)
FIG. 3 is a side sectional view of an engine-driven work device according to a third embodiment of the present invention, and FIG. 4 is a top view of FIG. 3 viewed from above.

本実施形態においては、第２の実施形態の構成に、洗浄液３１、洗浄液槽３２、洗浄液ポンプ３３、洗浄液ポンプ３４、散水ノズル３５、および散水ノズル３６から構成される噴霧装置を設置し、洗浄液３１を空気冷却器１３、および放熱器１９へ噴霧するよう構成したものである。   In the present embodiment, a spraying device including a cleaning liquid 31, a cleaning liquid tank 32, a cleaning liquid pump 33, a cleaning liquid pump 34, a watering nozzle 35, and a watering nozzle 36 is installed in the configuration of the second embodiment. Is sprayed onto the air cooler 13 and the radiator 19.

本実施形態において、空気冷却器１３、および放熱器１９にゴミ２３が付着し、冷却空気２５、および冷却空気２６の風量が減少した場合には、洗浄液ポンプ３３、および洗浄液ポンプ３４を運転することで、洗浄液槽３２に接続された管３７、および管３８から洗浄液３１を吸引し、管３９、および管４０によって散水ノズル３５、および散水ノズル３６に供給し、空気冷却器１３、および放熱器１９に噴霧することで、ゴミ２３の固着を溶かして取り除くことができる。さらに、洗浄液３１が気化する際に蒸発潜熱を奪うので、空気冷却器１３、および放熱器１９の冷却能力を向上させることができる。   In this embodiment, when the dust 23 adheres to the air cooler 13 and the radiator 19 and the air volume of the cooling air 25 and the cooling air 26 decreases, the cleaning liquid pump 33 and the cleaning liquid pump 34 are operated. Then, the cleaning liquid 31 is sucked from the pipe 37 and the pipe 38 connected to the cleaning liquid tank 32 and supplied to the watering nozzle 35 and the watering nozzle 36 through the pipe 39 and the pipe 40, and the air cooler 13 and the radiator 19. The dust 23 can be dissolved and removed by spraying on the surface. Furthermore, since the latent heat of vaporization is removed when the cleaning liquid 31 is vaporized, the cooling capacity of the air cooler 13 and the radiator 19 can be improved.

また、洗浄液３１は水でもよい。洗浄液ポンプ３３、および洗浄液ポンプ３４はそれぞれ独立して運転できるように構成することで、ゴミ２３が付着した空気冷却器１３、または放熱器１９に選択的に洗浄液３１を噴霧できるため、正常な状態の空気冷却器１３、または放熱器１９に洗浄液３１がかかることによるエンジン１の冷却水、または燃焼用空気の冷え過ぎを防止する。また、洗浄液３１はエンジン駆動作業装置の停止中に噴霧し、冷却空気２５、および冷却空気２６による洗浄液３１の飛散を防止すると同時に、洗浄後に電動冷却ファン２７を逆転させることで、ゴミ２３の残渣を空気冷却器１３、および放熱器１９から取り除きエンジン駆動発電装置の筐体４の外へ排出することが可能である。   Further, the cleaning liquid 31 may be water. Since the cleaning liquid pump 33 and the cleaning liquid pump 34 can be operated independently, the cleaning liquid 31 can be selectively sprayed on the air cooler 13 or the radiator 19 to which the dust 23 has adhered. This prevents the cooling water of the engine 1 or the combustion air from being overcooled due to the cleaning liquid 31 being applied to the air cooler 13 or the radiator 19. Further, the cleaning liquid 31 is sprayed while the engine-driven work apparatus is stopped to prevent the cleaning liquid 31 from being scattered by the cooling air 25 and the cooling air 26, and at the same time, the electric cooling fan 27 is reversed after the cleaning, thereby allowing the residue of the dust 23 to remain. Can be removed from the air cooler 13 and the radiator 19 and discharged out of the casing 4 of the engine-driven power generator.

以上説明したように、本実施形態によれば、請求項１の効果に加え、空気冷却器、および放熱器へ洗浄液を噴霧することで、空気冷却器、および放熱器に付着したゴミによるエンジン駆動作業装置の効率、および出力の低下を防止し、また、付着した場合であっても容易に取り除くことができ、運転効率を向上させたエンジン駆動作業装置を提供できる。   As described above, according to the present embodiment, in addition to the effect of claim 1, the engine is driven by dust adhering to the air cooler and the radiator by spraying the cleaning liquid onto the air cooler and the radiator. A reduction in the efficiency and output of the work device can be prevented, and even if it is attached, it can be easily removed, and an engine-driven work device with improved operating efficiency can be provided.

本発明の第１の実施形態のエンジン駆動作業装置の側断面図。1 is a side sectional view of an engine-driven work device according to a first embodiment of the present invention. 図１を上から見た上面図。The top view which looked at FIG. 1 from the top. 本発明の第２の実施形態のエンジン駆動作業装置の側断面図。The sectional side view of the engine drive work apparatus of the 2nd Embodiment of this invention. 図３を上から見た上面図。The top view which looked at FIG. 3 from the top. 従来のエンジン駆動作業装置の側断面図。The sectional side view of the conventional engine drive working device. 図５を上から見た上面図。The top view which looked at FIG. 5 from the top.

符号の説明Explanation of symbols

１…エンジン、２…作業機、３…制御盤、４…筐体、５…過給機、６…排気集合管、７…吸気フィルタ、８…管（吸気フィルタ〜過給機）、９…管（過給機〜消音器）、１０…消音器、１１…排気管、１２…管（過給機〜空気冷却器）、１３…空気冷却器、１４…冷却ファン、１５…冷却空気、１６…管（空気冷却器〜吸気集合管）、１７…吸気集合管、１８…管（エンジン〜放熱器）、１９…放熱器、２０…管（放熱器〜エンジン）、２１…プーリー、２２…ベルト、２３…ゴミ、２４…空気取入口、２５…冷却空気（空気冷却器側）、２６…冷却空気（放熱器側）、２７…電動冷却ファン、２８…換気扇、２９…冷却空気取入口（空気冷却器用）、３０…冷却空気取入口（放熱器用）、３１…洗浄液、３２…洗浄液槽、３３…洗浄液ポンプ（空気冷却器用）、３４…洗浄液ポンプ（放熱器用）、３５…散水ノズル（空気冷却器用）、３６…散水ノズル（放熱器用）、３７…管（洗浄液槽〜洗浄液ポンプ（空気冷却器用））、３８…管（洗浄液槽〜洗浄液ポンプ（放熱器用））、３９…管（洗浄液ポンプ（空気冷却器用）〜散水ノズル（空気冷却器用））、４０…管（洗浄液ポンプ（放熱器用）〜散水ノズル（放熱器用））。   DESCRIPTION OF SYMBOLS 1 ... Engine, 2 ... Working machine, 3 ... Control panel, 4 ... Housing, 5 ... Supercharger, 6 ... Exhaust collecting pipe, 7 ... Intake filter, 8 ... Pipe (intake filter-supercharger), 9 ... Pipe (supercharger to silencer), 10 ... silencer, 11 ... exhaust pipe, 12 ... pipe (supercharger to air cooler), 13 ... air cooler, 14 ... cooling fan, 15 ... cooling air, 16 ... pipe (air cooler to intake manifold), 17 ... intake manifold, 18 ... pipe (engine to radiator), 19 ... radiator, 20 ... pipe (heat radiator to engine), 21 ... pulley, 22 ... belt , 23 ... dust, 24 ... air intake, 25 ... cooling air (air cooler side), 26 ... cooling air (radiator side), 27 ... electric cooling fan, 28 ... ventilation fan, 29 ... cooling air intake (air) For cooling device), 30 ... cooling air intake (for radiator), 31 ... cleaning liquid, 32 ... cleaning liquid tank, 33 ... cleaning liquid pump (For air cooler), 34 ... cleaning liquid pump (for radiator), 35 ... sprinkling nozzle (for air cooler), 36 ... sprinkling nozzle (for radiator), 37 ... pipe (cleaning liquid tank to cleaning liquid pump (for air cooler)), 38 ... pipe (cleaning liquid tank-cleaning liquid pump (for radiator)), 39 ... pipe (cleaning liquid pump (for air cooler) -water nozzle (for air cooler)), 40 ... pipe (cleaning liquid pump (for radiator))-water nozzle ( For radiators)).

Claims (3)

エンジンと、前記エンジンの排気ガスによって駆動され圧縮空気を供給する過給機と、前記過給機によって供給される圧縮空気を冷却し前記エンジンに供給する空気冷却器と、前記エンジンの冷却水を冷却する放熱器と、前記空気冷却器と前記放熱器へ冷却空気を供給する冷却ファンと、前記エンジンによって駆動される作業機と、前記エンジンおよび前記作業機を制御する制御装置とから構成されるエンジン駆動作業装置であって、前記放熱器と前記空気冷却器を冷却空気の流れに対し並列に設置したことを特徴とするエンジン駆動作業装置。   An engine, a supercharger that is driven by the exhaust gas of the engine and supplies compressed air, an air cooler that cools and supplies the compressed air supplied by the supercharger, and cooling water for the engine A cooling radiator, a cooling fan that supplies cooling air to the air cooler, the radiator, a working machine driven by the engine, and a control device that controls the engine and the working machine. An engine-driven work device, wherein the radiator and the air cooler are installed in parallel to a flow of cooling air. 請求項１記載のエンジン駆動作業装置において、前記冷却ファンの回転方向、および回転速度を可変制御可能な冷却ファン制御装置を設けたことを特徴とするエンジン駆動作業装置。   2. The engine-driven work device according to claim 1, further comprising a cooling fan control device capable of variably controlling the rotation direction and the rotation speed of the cooling fan. 請求項１記載のエンジン駆動作業装置において、前記放熱器と前記空気冷却器の少なくとも一方に洗浄液を噴霧する噴霧装置を備えたことを特徴とするエンジン駆動作業装置。

2. The engine-driven work apparatus according to claim 1, further comprising a spraying device that sprays a cleaning liquid onto at least one of the radiator and the air cooler.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102434263A (en) * 2010-09-16 2012-05-02 本田技研工业株式会社 Cover structure of general-purpose liquid-cooled engine

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JPS62175218U (en) * 1986-04-25 1987-11-07
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102434263A (en) * 2010-09-16 2012-05-02 本田技研工业株式会社 Cover structure of general-purpose liquid-cooled engine

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