JP2010249086A - Engine generator - Google Patents

Engine generator Download PDF

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Publication number
JP2010249086A
JP2010249086A JP2009101676A JP2009101676A JP2010249086A JP 2010249086 A JP2010249086 A JP 2010249086A JP 2009101676 A JP2009101676 A JP 2009101676A JP 2009101676 A JP2009101676 A JP 2009101676A JP 2010249086 A JP2010249086 A JP 2010249086A
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casing
electrical component
component box
engine generator
electrical
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JP2009101676A
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JP5281948B2 (en
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Katsuaki Tanaka
克明 田中
Yuto Sakuragi
勇人 櫻木
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Nippon Sharyo Ltd
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Nippon Sharyo Ltd
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  • Motor Or Generator Cooling System (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine generator capable of favorably cooling electrical components stored in an electrical component box mounted to the outer face of a casing. <P>SOLUTION: The internal of the casing 14 is cooled by outside air sucked from a suction port 12 by the operation of a cooling fan. The electrical components 18 are stored in the electrical component box 17 mounted to the outer face of the casing 14. Openings 17b, 17d are formed at the back face located at the casing side of the electrical component box 17 and at a face other than the back face, respectively, and the opening 17b formed at the back face is opposed to the suction port 12. In a state that a clearance E1 is formed between the back face of the electrical component box 17 and the outer face of the casing, the electrical component box 17 is mounted to the outer face of the casing 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明はエンジン発電機に関し、詳しくは、エンジン発電機のケーシングに外付けした電装品ボックスの冷却構造に関する。   The present invention relates to an engine generator, and more particularly to a cooling structure for an electrical component box externally attached to a casing of the engine generator.

従来、エンジンで発電機を駆動するエンジン発電機では、騒音を低減させるためのケーシング内にエンジンや発電機、冷却ファン、電装品等を収納し、前記冷却ファンによって、ケーシングに設けた吸気口から外気を導入し、エンジンや発電機と共に電装品を冷却するようにしている(例えば、特許文献1及び特許文献2参照。)。   Conventionally, in an engine generator that drives a generator with an engine, an engine, a generator, a cooling fan, electrical components, and the like are housed in a casing for reducing noise, and the cooling fan allows the air from an intake port provided in the casing. Outside air is introduced to cool the electrical components together with the engine and the generator (see, for example, Patent Document 1 and Patent Document 2).

特開2004−270497号公報JP 2004-270497 A 特開2005−201199号公報JP 2005-201199 A

エンジン発電機は、使用される現場によって、予めケーシング内に備えている各種電装品の他に、ヒューズボックスや各種リレー等の電装品を追加しなければならない場合、追加したい各種電装品を収容した電装品ボックスをケーシングの外面に取り付けることが行われている。上述の各特許文献では、ケーシングの内部に設けられた電装品を冷却ファンによって冷却する構造が開示されているが、外付けの電装品ボックス内の電装品を冷却することについては考慮されておらず、通常は、電装品ボックスに設けた通気孔による自然換気での冷却に頼っているため、使用状況によっては電装品の温度が過度に上昇して誤作動や損傷が発生するおそれがあった。   Depending on the site where the engine generator is used, if it is necessary to add electrical components such as a fuse box and various relays in addition to the various electrical components provided in the casing in advance, the engine generator accommodates various electrical components to be added. An electrical component box is attached to the outer surface of the casing. In each of the above patent documents, a structure for cooling an electrical component provided inside the casing by a cooling fan is disclosed, but cooling of the electrical component in the external electrical component box is not considered. In general, because it relies on natural ventilation cooling through the ventilation holes provided in the electrical component box, the temperature of the electrical component may rise excessively depending on the usage conditions, causing malfunction or damage. .

そこで本発明は、ケーシングの外面に取り付けられる電装品ボックス内に収容した電装品を良好に冷却することができるエンジン発電機を提供することを目的としている。   SUMMARY OF THE INVENTION An object of the present invention is to provide an engine generator capable of satisfactorily cooling an electrical component housed in an electrical component box attached to the outer surface of a casing.

上記目的を達成するため、本発明のエンジン発電機は、吸気口と排気口とを備えたケーシング内にエンジン、発電機、電装品及び冷却ファンを収容し、前記冷却ファンの作動により前記吸気口から吸入した外気でケーシング内を冷却し、冷却後の空気を前記排気口から外部に放出するエンジン発電機において、前記ケーシングの外面に取り付けられる電装品ボックス内に電装品を収容するとともに、前記電装品ボックスのケーシング側に位置する背面と、該背面以外の面とにそれぞれ開口部を設け、前記背面に設けた開口部を前記吸気口に対向させ、電装品ボックスの背面とケーシングの外面との間に隙間を設けた状態で、前記電装品ボックスを前記ケーシングの外面に取り付けたことを特徴としている。   In order to achieve the above object, an engine generator according to the present invention accommodates an engine, a generator, electrical components, and a cooling fan in a casing having an intake port and an exhaust port, and the intake port is activated by the operation of the cooling fan. In the engine generator that cools the inside of the casing with the outside air sucked from and discharges the cooled air to the outside from the exhaust port, the electrical equipment is housed in an electrical equipment box attached to the outer surface of the casing, and the electrical equipment An opening is provided in each of the back surface located on the casing side of the product box and the surface other than the back surface, the opening provided in the back surface is opposed to the air intake port, and the back surface of the electrical component box and the outer surface of the casing The electrical component box is attached to the outer surface of the casing with a gap therebetween.

本発明のエンジン発電機によれば、冷却ファンによって吸気口からケーシング内に吸引される外気を、吸気口に吸引される前に電装品ボックス内に流通させるので、電装品ボックス内を流通する外気によって効果的に冷却することができ、電装品ボックス内の電装品の温度上昇を防止できる。また、電装品ボックス背面とケーシング外面との間に隙間を設けているので、吸気口からケーシング内に吸引される外気の吸気抵抗の増加を抑制することができ、ケーシング内に吸引される外気量が低下することを防止できる。   According to the engine generator of the present invention, the outside air sucked into the casing from the intake port by the cooling fan is circulated in the electrical component box before being sucked into the intake port. Therefore, the temperature can be effectively cooled, and the temperature rise of the electrical components in the electrical component box can be prevented. In addition, since a gap is provided between the back of the electrical component box and the outer surface of the casing, an increase in the intake resistance of the outside air sucked into the casing from the inlet can be suppressed, and the amount of outside air sucked into the casing Can be prevented from decreasing.

本発明の第1形態例を示すエンジン発電機の要部断面図である。It is principal part sectional drawing of the engine generator which shows the 1st form example of this invention. 同じくエンジン発電機の要部斜視図である。It is a principal part perspective view of an engine generator similarly. 同じくエンジン発電機の側面図である。It is a side view of an engine generator. 同じくエンジン発電機の正面図である。It is a front view of an engine generator similarly. 本発明の第2形態例を示すエンジン発電機の要部斜視図である。It is a principal part perspective view of the engine generator which shows the 2nd form example of this invention. 同じくエンジン発電機の要部断面図である。Similarly it is principal part sectional drawing of an engine generator.

図1乃至図4の本発明の第1形態例に示すエンジン発電機11は、複数の吸気口12及び排気口13を備えたケーシング14内に、エンジン、発電機、電装品、冷却ファン、燃料タンクなどを収容したもので、ケーシング14の前面には、内部点検扉15と所定の出力端子16aを備えた端子箱16とが設けられている。内部点検扉15は、前面に前記吸気口12が設けられると共に、端子箱16に電源ケーブル16bを介して接続される後付けの電装品ボックス17が着脱可能な状態で取り付けられている。   The engine generator 11 shown in the first embodiment of the present invention shown in FIGS. 1 to 4 includes an engine, a generator, electrical components, a cooling fan, and a fuel in a casing 14 having a plurality of intake ports 12 and exhaust ports 13. A tank or the like is accommodated, and an inner inspection door 15 and a terminal box 16 having a predetermined output terminal 16a are provided on the front surface of the casing 14. The internal inspection door 15 is provided with the air inlet 12 on the front surface, and is attached with a retrofit electrical component box 17 connected to the terminal box 16 via a power cable 16b.

電装品ボックス17は、箱形に形成されたボックス内に追加が必要な各種電装品18を収納したものであって、内部点検扉15への取付側に位置する背面板17aの上部には背面側開口部17bが設けられるとともに、背面板17aに対向する前面板17cの下部には前面側開口部17dが設けられている。   The electrical component box 17 stores various electrical components 18 that need to be added in a box formed in a box shape. The electrical component box 17 has a rear surface on the upper side of the rear plate 17a that is located on the mounting side to the internal inspection door 15. A side opening 17b is provided, and a front side opening 17d is provided below the front plate 17c facing the back plate 17a.

この電装品ボックス17は、上部取付金具19及び下部取付金具20により、前記内部点検扉15の前面15aに設けられている吸気口12の外側に、背面板17aと前面15aとの間に隙間E1を設けた状態で、背面側開口部17bと吸気口12とを対向させるようにして取り付けられる。   The electrical component box 17 has a gap E <b> 1 between the back plate 17 a and the front surface 15 a on the outside of the air inlet 12 provided on the front surface 15 a of the internal inspection door 15 by the upper mounting bracket 19 and the lower mounting bracket 20. The rear opening 17b and the intake port 12 are attached so as to face each other.

上部取付金具19と下部取付金具20とは、断面Z状にそれぞれ形成されており、上部取付金具19は、上端側が内部点検扉15の上部に、下端側が電装品ボックス17の背面板17aの上部にそれぞれボルト止めされ、下部取付金具20は、下端側が内部点検扉15の中央部に、上端側が電装品ボックス17の背面板17aの下部にそれぞれボルト止めされる。   The upper mounting bracket 19 and the lower mounting bracket 20 are each formed in a Z-shaped cross section, and the upper mounting bracket 19 has an upper end side above the internal inspection door 15 and a lower end side above the rear plate 17a of the electrical component box 17. The lower mounting bracket 20 is bolted at the lower end side to the center of the internal inspection door 15 and at the upper end side to the lower portion of the back plate 17 a of the electrical component box 17.

このようにしてエンジン発電機11のケーシング14の外面に電装品ボックス17を外付けすることにより、エンジン発電機11が運転を開始してケーシング14内の冷却ファンが作動すると、吸気口12に吸引される外気は、一部が前記隙間E1を通って吸気口12に吸引され、残部が電装品ボックス17内を通過して吸引される。   Thus, by attaching the electrical component box 17 to the outer surface of the casing 14 of the engine generator 11, when the engine generator 11 starts operation and the cooling fan in the casing 14 is activated, the suction is sucked into the intake port 12. A part of the outside air is sucked into the air inlet 12 through the gap E1, and the remaining part is sucked through the electrical component box 17.

すなわち、吸気口12の外部側に生じる負圧によって電装品ボックス17内の空気が背面側開口部17bを通して吸引され、背面側開口部17bから空気が流出することによって電装品ボックス17内が負圧となるため、前面側開口部17dから電装品ボックス17内に外気が吸引される状態となる。したがって、電装品ボックス17内の電装品18は、前面側開口部17dから流入して背面側開口部17bに抜ける外気により冷却されるので、電装品18が温度上昇して誤作動したり、損傷したりすることを防止できる。   That is, air in the electrical component box 17 is sucked through the back side opening 17b by the negative pressure generated outside the intake port 12, and the air flows out from the back side opening 17b, so that the inside of the electrical component box 17 is negative pressure. Therefore, the outside air is sucked into the electrical component box 17 from the front opening 17d. Therefore, the electrical component 18 in the electrical component box 17 is cooled by the outside air that flows from the front side opening 17d and exits to the rear side opening 17b, so that the electrical component 18 rises in temperature and malfunctions or is damaged. Can be prevented.

背面側開口部17b及び前面側開口部17dの開口面積と、背面板17aと内部点検扉15との間の隙間E1の寸法は、電装品ボックス17及び吸気口12の大きさ、電装品ボックス17内に収容した電装品18の発熱状況、吸気口12の吸引風量などの条件に応じて適宜設定することができる。   The opening area of the back side opening 17b and the front side opening 17d and the size of the gap E1 between the back plate 17a and the internal inspection door 15 are the sizes of the electrical component box 17 and the intake port 12, the electrical component box 17 It can be set as appropriate according to the conditions such as the heat generation status of the electrical component 18 housed therein and the suction air volume at the air inlet 12.

図5及び図6は本発明の第2形態例を示すもので、第1形態例と同様の構成要素を示すものには、同一の符号を付して、その詳細な説明は省略する。   FIGS. 5 and 6 show a second embodiment of the present invention. Components that are the same as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

本形態例のエンジン発電機は、ケーシング14の側壁14aの下部に吸気口12が設けられているもので、電装品ボックス17には、背面板17aの下部と、前面板17cの上部とに、背面側開口部17eと前面側開口部17fをそれぞれ形成している。この電装品ボックス17は、ケーシング14の側壁14aに形成された前記吸気口12に、背面板17aに形成した背面側開口部17eを対向させて配置し、上部取付金具21と下部取付金具22とを介して、ケーシング14の側壁14aとの間に隙間E1を設けた状態で、側壁14aの外面に取り付けられる。   The engine generator of the present embodiment is provided with an inlet 12 at the lower part of the side wall 14a of the casing 14, and the electrical component box 17 includes a lower part of the back plate 17a and an upper part of the front plate 17c. A back side opening 17e and a front side opening 17f are formed. The electrical component box 17 is disposed with the rear opening 17e formed in the back plate 17a facing the intake port 12 formed in the side wall 14a of the casing 14, and an upper mounting bracket 21 and a lower mounting bracket 22 are arranged. And is attached to the outer surface of the side wall 14a with a gap E1 provided between the casing 14 and the side wall 14a.

上部取付金具21及び下部取付金具22は、それぞれ断面L状に形成され、上部取付金具21は、一片が電装品ボックス17の上部側面に固定され、他片がケーシング14の側壁14aに固定される、また、下部取付金具22は、一片が電装品ボックス17の底面17gに、他方がケーシング14の側壁14a下方にそれぞれ固定される。   The upper mounting bracket 21 and the lower mounting bracket 22 are each formed in an L-shaped cross section, and one piece of the upper mounting bracket 21 is fixed to the upper side surface of the electrical component box 17, and the other piece is fixed to the side wall 14 a of the casing 14. Further, one piece of the lower mounting bracket 22 is fixed to the bottom surface 17 g of the electrical component box 17, and the other is fixed below the side wall 14 a of the casing 14.

尚、電装品ボックスにおける開口部は、少なくとも一つはケーシングに設けられた吸気口に対向する背面板部分に設ける必要があるが、外気をボックス内に取り入れるための開口部の位置は、前面に限らず、側面や底面に設けてもよく、複数の面に複数の開口部を設けることもできる。また、電装品ボックスの取付位置は、ケーシングに設けられている各部の吸気口に対応させて選択することができる。   It should be noted that at least one opening in the electrical component box needs to be provided in the back plate portion facing the air inlet provided in the casing, but the position of the opening for taking outside air into the box is on the front. Not limited to this, it may be provided on the side surface or the bottom surface, and a plurality of openings may be provided on a plurality of surfaces. Further, the mounting position of the electrical component box can be selected in correspondence with the inlets of the respective parts provided in the casing.

11…エンジン発電機、12…吸気口、13…排気口、14…ケーシング、14a…側壁、15…内部点検扉、16…端子箱、16a…出力端子、16b…電源ケーブル、17…電装品ボックス、17a…背面板、17b…背面側開口部、17c…前面板、17d…前面側開口部、17e…背面側開口部、17f…前面側開口部、17g…底面、18…電装品、19,21…上部取付金具、20,22…下部取付金具   DESCRIPTION OF SYMBOLS 11 ... Engine generator, 12 ... Intake port, 13 ... Exhaust port, 14 ... Casing, 14a ... Side wall, 15 ... Internal inspection door, 16 ... Terminal box, 16a ... Output terminal, 16b ... Power cable, 17 ... Electrical component box , 17a ... back plate, 17b ... back side opening, 17c ... front plate, 17d ... front side opening, 17e ... back side opening, 17f ... front side opening, 17g ... bottom side, 18 ... electrical component, 19, 21 ... Upper mounting bracket, 20, 22 ... Lower mounting bracket

Claims (1)

吸気口と排気口とを備えたケーシング内にエンジン、発電機、電装品及び冷却ファンを収容し、前記冷却ファンの作動により前記吸気口から吸入した外気でケーシング内を冷却し、冷却後の空気を前記排気口から外部に放出するエンジン発電機において、前記ケーシングの外面に取り付けられる電装品ボックス内に電装品を収容するとともに、前記電装品ボックスのケーシング側に位置する背面と、該背面以外の面とにそれぞれ開口部を設け、前記背面に設けた開口部を前記吸気口に対向させ、電装品ボックスの背面とケーシングの外面との間に隙間を設けた状態で、前記電装品ボックスを前記ケーシングの外面に取り付けたことを特徴とするエンジン発電機。 An engine, a generator, electrical components and a cooling fan are housed in a casing having an intake port and an exhaust port, and the inside of the casing is cooled by outside air sucked from the intake port by the operation of the cooling fan, and the cooled air In the engine generator that discharges to the outside from the exhaust port, the electrical component is housed in an electrical component box attached to the outer surface of the casing, and a back surface positioned on the casing side of the electrical component box; The opening is provided on each of the surfaces, the opening provided on the back surface is opposed to the air intake port, and a gap is provided between the back surface of the electrical component box and the outer surface of the casing. An engine generator mounted on the outer surface of a casing.
JP2009101676A 2009-04-20 2009-04-20 Engine generator Expired - Fee Related JP5281948B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014177930A (en) * 2013-03-15 2014-09-25 Nippon Sharyo Seizo Kaisha Ltd Engine generator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6192168U (en) * 1984-11-24 1986-06-14
JPH11200951A (en) * 1998-01-13 1999-07-27 Kubota Corp Co-generation device
JP2004211555A (en) * 2002-12-26 2004-07-29 Yanmar Co Ltd Engine work machine
JP2004270497A (en) * 2003-03-06 2004-09-30 Mazda Motor Corp Engine generator
JP2005201199A (en) * 2004-01-19 2005-07-28 Denyo Co Ltd Engine-driven work machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6192168U (en) * 1984-11-24 1986-06-14
JPH11200951A (en) * 1998-01-13 1999-07-27 Kubota Corp Co-generation device
JP2004211555A (en) * 2002-12-26 2004-07-29 Yanmar Co Ltd Engine work machine
JP2004270497A (en) * 2003-03-06 2004-09-30 Mazda Motor Corp Engine generator
JP2005201199A (en) * 2004-01-19 2005-07-28 Denyo Co Ltd Engine-driven work machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014177930A (en) * 2013-03-15 2014-09-25 Nippon Sharyo Seizo Kaisha Ltd Engine generator

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