JPH108991A - Soundproof engine working machine - Google Patents

Soundproof engine working machine

Info

Publication number
JPH108991A
JPH108991A JP16933596A JP16933596A JPH108991A JP H108991 A JPH108991 A JP H108991A JP 16933596 A JP16933596 A JP 16933596A JP 16933596 A JP16933596 A JP 16933596A JP H108991 A JPH108991 A JP H108991A
Authority
JP
Japan
Prior art keywords
cooling air
chamber
sub
muffler
room
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.)
Granted
Application number
JP16933596A
Other languages
Japanese (ja)
Other versions
JP3412790B2 (en
Inventor
Yoshinori Aoyama
恵紀 青山
Masayasu Furukawa
正保 古川
Yoshito Ishii
義人 石井
Koji Fukui
宏次 福井
Kazumi Oda
一己 織田
Takashi Fukushima
孝 福島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP16933596A priority Critical patent/JP3412790B2/en
Publication of JPH108991A publication Critical patent/JPH108991A/en
Application granted granted Critical
Publication of JP3412790B2 publication Critical patent/JP3412790B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00Component parts, details or accessories, not otherwise provided for
    • F02B77/11Thermal or acoustic insulation
    • F02B77/13Acoustic insulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F02B63/044Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators the engine-generator unit being placed on a frame or in an housing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve cooling effect in a compact structure while ensuring silencing effect without reducing the capacities of both silencing units by independently forming cooling air passages for two silencing units arranged in a subsicliary room. SOLUTION: A partition plate 2 is arranged in a soundproof case 1, which is partitioned into a main room A and a subsidiary room B. An engine and a working machine are arranged in the main room A while two silencing units PM, MM are arranged in the subsidiary room B, so that cooling air as silencing unit cooling air W1, W2 is guided from the main room A into the subsidiary room B. Specially, cooling air passages B1, B2 for two silencing units PM, MM arranged in the subsidiary room B are independently formed. In this way, the cooling effect of the silencing units PM, MM is improved and heat balance in the soundproof case 1 is made proper in association with the soundproof case 1 partitioned into the main room A and the subsidiary room B. Cooling air passing resistance in the cooling air passages B1, B2 is reduced and sufficient cooling air are held for the silencing units PM, MM.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、エンジンと、発電
機やコンプレッサーやポンプ等の作業機とを連結してな
るエンジン作業機を防音ケース内に配設し、排気系のマ
フラーにエンジン作業機の冷却風を供給する冷却構造を
採用した防音型エンジン作業機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine working machine comprising an engine and a working machine such as a generator, a compressor, a pump, and the like connected in a soundproof case. The present invention relates to a soundproof engine working machine employing a cooling structure for supplying a cooling air.

【0002】[0002]

【従来の技術】従来、防音ケースの内部を仕切板により
主室と副室に区画し、主室にはエンジン及び作業機を、
副室には、前置マフラーとメインマフラーの二個のマフ
ラーを配置し、主室からの冷却排風をマフラー冷却風と
して副室内に導入する構成とした防音型エンジン作業機
は公知(特開平4−308322号)である。この公知
技術では、副室内における冷却風通路が一系統であるた
め、前置マフラーを冷却した後の冷却風がメインマフラ
ーに供給されることとなり、メインマフラーの冷却効果
が薄れるという問題がある。この対策の一つとして、マ
フラー容量を縮小することが考えられるが、これは、防
音効果を低減することとなる。そこで、従来は、防音ケ
ースを大型化することで、防音ケース内壁とマフラーと
の間隙を確保する構造が取られていた。
2. Description of the Related Art Conventionally, the interior of a soundproof case is divided into a main room and a sub room by a partition plate, and an engine and a working machine are provided in the main room.
2. Description of the Related Art A soundproof engine working machine in which two mufflers, a front muffler and a main muffler, are arranged in a sub-chamber, and cooling exhaust air from the main chamber is introduced into the sub-chamber as muffler cooling air is disclosed in Japanese Patent Laid-Open Publication No. HEI 9 (1994). 4-308322). In this known technique, since the cooling air passage in the sub-chamber is one system, the cooling air after cooling the front muffler is supplied to the main muffler, and there is a problem that the cooling effect of the main muffler is weakened. As one of countermeasures, it is conceivable to reduce the capacity of the muffler, but this will reduce the soundproofing effect. Therefore, conventionally, a structure has been adopted in which the gap between the inner wall of the soundproof case and the muffler is secured by increasing the size of the soundproof case.

【0003】[0003]

【発明が解決しようとする課題】しかし、このように防
音ケースを大型化することは、コンパクト化の要請に逆
行する。望ましくは、防音ケースをコンパクトに保った
ままで、しかも低コストで、防音効果もマフラーの冷却
効果も獲得できる防音型エンジン作業機を構成したい。
また、前置マフラーとメインマフラーでは、容量に差が
あるのが通常であり、各容量にふさわしい冷却風量を確
保するということは、冷却風通路が一系統では実現でき
ない。
However, increasing the size of the soundproof case in this way goes against the demand for compactness. Desirably, it is desirable to configure a soundproof engine working machine that can obtain a soundproof effect and a muffler cooling effect while keeping the soundproof case compact and at low cost.
Further, there is usually a difference in capacity between the front muffler and the main muffler, and securing a cooling air volume appropriate for each capacity cannot be realized by a single cooling air passage.

【0004】[0004]

【課題を解決するための手段】本発明は、防音ケースの
内部を仕切板により主室と副室に区画し、主室にはエン
ジン及び作業機を、副室には二個のマフラーを配置し、
主室からの冷却排風をマフラー冷却風として副室内に導
入する構成とすると共に、以上の課題を解決すべく、次
のような手段を用いるものである。第一に、該副室内に
配置する二個のマフラーに対する冷却風通路を独立形成
する。
According to the present invention, the interior of the soundproof case is divided into a main chamber and a sub chamber by a partition plate, and an engine and a working machine are arranged in the main chamber, and two mufflers are arranged in the sub chamber. And
The cooling exhaust air from the main chamber is introduced as a muffler cooling air into the sub-chamber, and the following means are used to solve the above-mentioned problems. First, the cooling air passages for the two mufflers arranged in the sub-chamber are independently formed.

【0005】第二に、該副室内にて、メンテナンス用開
口部を囲むように仕切壁を配設し、該開口部を含む仕切
壁の内側と、その外側に配設するマフラーとを区画し、
該仕切壁にてマフラー冷却風通路の一部を形成する構成
とする。
Second, in the sub-chamber, a partition wall is provided so as to surround the maintenance opening, and the inside of the partition wall including the opening and a muffler provided outside the partition wall are partitioned. ,
The partition wall forms a part of a muffler cooling air passage.

【0006】第三に、該副室内に配置する二個のマフラ
ーに対する冷却風通路を独立形成する構成とした防音型
エンジン作業機において、各冷却風通路における吐出部
と連絡部との面積比率を、各マフラーの容量に応じて設
定する。
Third, in the soundproof engine working machine in which the cooling air passages for the two mufflers disposed in the sub-chamber are formed independently, the area ratio between the discharge portion and the connecting portion in each cooling air passage is determined. , Set according to the capacity of each muffler.

【0007】[0007]

【発明の実施の形態】本発明の実施の形態を、添付の図
面を基に説明する。図1は本発明に係る防音型エンジン
作業機の内部副室B側斜視図、図2は同じく主室A側斜
視図、図3は同じく内部側面図、図4は同じく内部平面
図、図5は同じく内部後面図、図6は同じく吐出用仕切
板12・13を配設した場合の内部副室側斜視図であ
る。
Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of an inner sub-chamber B side of a soundproof engine working machine according to the present invention, FIG. 2 is a perspective view of a main chamber A side, FIG. 3 is an inner side view, FIG. Is also an internal rear view, and FIG. 6 is an internal sub-chamber side perspective view in the case where discharge partition plates 12 and 13 are also provided.

【0008】図1乃至図5図示の防音型エンジン作業機
の構成について説明する。防音ケース1内において、仕
切板2が配設されていて、主室Aと副室Bとに区画して
いる。該防音ケース1の正面において、主室Aに対峙す
る部分には、外気導入口1aを形成しており、また、同
じく正面にて、副室Bに対峙する部分には、排風口1b
を開口している。該外気導入口1aはルーバー窓となっ
ていて、開口度を調節でき、該主室A内に配設するエン
ジンEや作業機W等の外部を通過させてこれらを冷却す
る冷却風としての外気を導入するものである。該外気導
入口1aより導入され、主室Aにてエンジン作業機を冷
却した後の冷却風は、副室B内に導入され、後記マフラ
ーPM・MMを冷却した後、排風口1bより排出される
ものであって、該排風口1bには、防塵網が施されてい
る。なお、該外気導入口1aは、後記の作業機W及びエ
ンジンEに直接的に導入した冷却風を当てるべく、後記
燃料タンクTよりも下方位置に形成されており、該排風
口1bは、排出する高温の冷却排気が、外気導入口1a
に導入される冷却風と混合しないように、該外気導入口
1aよりも上方位置にしている。
The construction of the soundproof engine working machine shown in FIGS. 1 to 5 will be described. In the soundproof case 1, a partition plate 2 is provided, and is divided into a main room A and a sub room B. In the front of the soundproof case 1, an outside air inlet 1a is formed at a portion facing the main chamber A, and at a portion facing the sub-chamber B at the front, an air outlet 1b is formed.
Is open. The outside air inlet 1a is a louver window, the degree of opening of which can be adjusted, and the outside air as cooling air that passes through the outside of the engine E, the working machine W, etc. disposed in the main room A and cools them. Is introduced. The cooling air that has been introduced from the outside air inlet 1a and has cooled the engine working machine in the main chamber A is introduced into the sub-chamber B, and has been discharged from the exhaust port 1b after cooling the muffler PM / MM described later. The exhaust port 1b is provided with a dustproof net. The outside air inlet 1a is formed at a position lower than a later-described fuel tank T in order to blow cooling air directly introduced into a working machine W and an engine E described later. High-temperature cooling exhaust gas is supplied to the outside air inlet 1a.
So as not to mix with the cooling air introduced into the outside air inlet 1a.

【0009】防音ケース1の上面において、副室B形成
部には、後記第三排気管11の上端を突設して、エンジ
ン排気を排出するようにしている。更に、同じく該防音
ケース1の上面の主室A形成部には、燃料タンクTより
突設される燃料給油口Taや燃料ゲージTbを配設して
おり、両側面のうち、主室A形成部の側面には、図2の
如く、出力端子パネル14や燃料抜取用コック15を形
成しており、その下方には、メンテナンス用ドア16を
配設していて、該メンテナンス用ドア16を開いて、そ
の内側に配設しているバッテリーBT(図5図示)のメ
ンテナンス(交換)作業を施すことができる。そして、
その対向側面、即ち、副室B形成部分の側面にメンテナ
ンス用の開口部を設けており、該開口部に、図1の如
く、運転調整用蓋4を開閉可能に取り付けている。該運
転調整用付蓋4の内側には、エンジン回転数調整用のレ
ギュレーターレバー5(図3図示)が配設されており、
該運転調整用蓋4を開いて、該レギュレーターレバー5
の調整作業を施すことができる。
On the upper surface of the soundproof case 1, an upper end of a third exhaust pipe 11, which will be described later, protrudes from the sub-chamber B forming portion so as to discharge engine exhaust. Further, a fuel filler port Ta and a fuel gauge Tb projecting from the fuel tank T are disposed in the main chamber A forming portion on the upper surface of the soundproof case 1. As shown in FIG. 2, an output terminal panel 14 and a fuel removal cock 15 are formed on the side surface of the unit, and a maintenance door 16 is provided below the output terminal panel 14 and a maintenance door 16. Thus, maintenance (replacement) of the battery BT (shown in FIG. 5) disposed inside the battery BT can be performed. And
An opening for maintenance is provided on the opposite side surface, that is, the side surface of the sub-chamber B forming portion, and an operation adjustment lid 4 is attached to the opening so as to be openable and closable as shown in FIG. A regulator lever 5 (shown in FIG. 3) for adjusting the engine speed is provided inside the operation adjustment cover 4.
Open the operation adjustment cover 4 and open the regulator lever 5
Adjustment work can be performed.

【0010】以上のような構成の防音ケース1に覆われ
て、主室A内には、エンジンEを配設し、その出力側
に、発電機やコンプレッサー等の作業機Wを連接して、
エンジン作業機を形成している。エンジンEの上方には
エアクリーナーACを、側方にはバッテリーBTを配設
しており、作業機Wの上方には燃料タンクTを配設して
いる。該エアクリーナーACよりエンジンEに対して
は、給気管8を配管している。また、エンジンEの作業
機W取付側と反対側には、排風スクロール6を連接して
おり、該排風スクロール6には、図5図示の如く、冷却
ファン7が内設されている。
An engine E is provided in the main room A, covered with the soundproof case 1 having the above-described structure, and a working machine W such as a generator or a compressor is connected to the output side thereof.
Forming an engine working machine. An air cleaner AC is arranged above the engine E, a battery BT is arranged on the side, and a fuel tank T is arranged above the work implement W. An air supply pipe 8 is provided from the air cleaner AC to the engine E. Further, an exhaust wind scroll 6 is connected to the side of the engine E opposite to the side where the work machine W is mounted, and a cooling fan 7 is provided in the exhaust wind scroll 6 as shown in FIG.

【0011】一方、副室B内において、前記のレギュレ
ーターレバー5の配設部分を囲む形に、仕切壁3を配設
している。つまり、前記の運転調整用蓋4を開けると該
仕切壁3にて囲まれた部分になっていて、ここに該レギ
ュレーターレバー5が配設されているのである。そし
て、該仕切壁3の上方位置にて、横向きに前置マフラー
PMを、該仕切壁3の前方位置にて、縦向きにメインマ
フラーMMを配設している。また、該仕切壁3の後方位
置にて、前記の如く主室A内に配設された排風スクロー
ル6の出口6aが仕切板2より突設されている。
On the other hand, in the sub-chamber B, a partition wall 3 is provided so as to surround a portion where the regulator lever 5 is provided. In other words, when the operation adjustment lid 4 is opened, it becomes a portion surrounded by the partition wall 3, and the regulator lever 5 is disposed here. A front muffler PM is disposed laterally at a position above the partition wall 3 and a main muffler MM is disposed vertically at a position in front of the partition wall 3. In addition, at the rear position of the partition wall 3, the outlet 6a of the air discharge scroll 6 disposed in the main chamber A as described above projects from the partition plate 2.

【0012】エンジンEより、第一排気管9が、仕切板
2を通過して前置マフラーPMに連結され、該前置マフ
ラーPMよりメインマフラーMMの上端に、第二排気管
10が連結され、更に該メインマフラーMMの下端より
第三排気管11を延設して、前記の如く、防音ケース1
の上端よりその末端部(上端部)を外部に突設して、排
気系を形成している。
From the engine E, the first exhaust pipe 9 passes through the partition plate 2 and is connected to the front muffler PM, and the second exhaust pipe 10 is connected to the upper end of the main muffler MM from the front muffler PM. Further, a third exhaust pipe 11 is extended from the lower end of the main muffler MM, and as described above,
The end (upper end) protrudes outward from the upper end to form an exhaust system.

【0013】以上のような各部品の配置構成に基づき、
冷却風の経路について図1、図3乃至図5より説明す
る。図中、白矢印は、主室A内における冷却風の流れ
を、黒矢印は、副室B内における冷却風の流れを示す。
まず、主室A内において、外気導入口1aより導入され
た冷却風は、水平方向に流れて直接的に作業機Wやエン
ジンEを冷却する風と、上方に流れて、燃料タンクTや
エアクリーナーAC等を冷却する風とに分岐される。
Based on the arrangement of each component as described above,
The cooling air path will be described with reference to FIGS. 1 and 3 to 5. In the figure, white arrows indicate the flow of cooling air in the main chamber A, and black arrows indicate the flow of cooling air in the sub-chamber B.
First, in the main chamber A, the cooling air introduced from the outside air inlet 1a flows in the horizontal direction and directly cools the work implement W and the engine E, and flows upward to the fuel tank T and the air. The air is branched into the air that cools the cleaner AC and the like.

【0014】主室A内にてエンジン作業機を冷却した後
の冷却風は、排風スクロール6に導入され、冷却ファン
7にて吸引されて、出口6aを介して副室B内に導入さ
れる。該出口6aより吐出された冷却風は、仕切壁3に
当たって、二方向に分かれる。即ち、図1及び図3の如
く、該仕切壁3の後端垂直面に沿って垂直上方に上がる
冷却風W1(この垂直上方向き冷却風W1の通る通路を
冷却風通路B1としている。)と、該仕切壁3の下端水
平面に沿って水平前方に流れる冷却風W2(この水平前
方向き冷却風W2の通る通路を冷却風通路B2としてい
る。)とに分岐する。前者の冷却風W1は、冷却風通路
B1を垂直上方に上がった後、水平前方に流れて、仕切
壁3の上方に配設される前置マフラーPMを冷却し、後
者の冷却風W2は、冷却風通路B2を水平前方に流れた
後、垂直上方に上がって、前メインマフラーMMを冷却
し、最終的に両冷却風W1・W2が合流して、排風口1
bより外部に排風されるのである。
The cooling air after cooling the engine working machine in the main chamber A is introduced into the exhaust scroll 6, sucked by the cooling fan 7, and introduced into the sub-chamber B through the outlet 6a. You. The cooling air discharged from the outlet 6a hits the partition wall 3 and splits in two directions. That is, as shown in FIGS. 1 and 3, a cooling wind W1 that rises vertically upward along the rear end vertical surface of the partition wall 3 (the passage of the vertically upward cooling wind W1 is a cooling wind passage B1). The cooling air W2 flows horizontally forward along the horizontal plane at the lower end of the partition wall 3 (the passage through which the horizontally forward cooling air W2 passes is referred to as a cooling air passage B2). The former cooling air W1 rises vertically upward in the cooling air passage B1, and then flows horizontally forward to cool the front muffler PM disposed above the partition wall 3, and the latter cooling air W2 After flowing in the cooling air passage B2 horizontally and forward, it rises vertically upward to cool the front main muffler MM, and finally both cooling air W1 and W2 join to form the exhaust port 1
The air is exhausted outside from b.

【0015】更に、二方向の冷却風W1・W2の分岐効
率を高めるべく、図6のように吐出用仕切板12・13
を配設することも考えられる。両吐出用仕切板12・1
3には、複数の冷却風吐出孔12a・13aが穿設され
ている。該吐出用仕切板12は、排風スクロール6の出
口6aの上端、該仕切壁3の後端、及び防音ケース1の
後面にて囲まれる部位に水平方向に配設されて、その冷
却風吐出孔12aより上方に冷却風W1を吐出するよう
にしており、一方、該吐出用仕切板13は、該出口6a
より前方にて、該仕切壁3の後部下端と仕切板2と防音
ケース1の側面及び下面とにて囲まれる部位に垂直方向
に配設され、その冷却風吐出孔13aより冷却風W2を
吐出するようにしている。
Further, in order to increase the branching efficiency of the cooling air W1 and W2 in two directions, as shown in FIG.
It is also conceivable to dispose. Partition plate 12.1 for both discharges
3, a plurality of cooling air discharge holes 12a and 13a are formed. The discharge partition plate 12 is horizontally disposed at a position surrounded by the upper end of the outlet 6 a of the exhaust draft scroll 6, the rear end of the partition wall 3, and the rear surface of the soundproof case 1. The cooling air W1 is discharged above the hole 12a, while the discharge partition plate 13 is connected to the outlet 6a.
Further forward, the cooling air W2 is discharged from a cooling air discharge hole 13a in a vertical direction at a portion surrounded by the rear lower end of the partition wall 3, the partition plate 2, and the side and lower surfaces of the soundproof case 1. I am trying to do it.

【0016】このように、副室B内において、前置マフ
ラーPMに対する冷却風通路と、メインマフラーMMに
対する冷却風通路が独立に形成されている。両マフラー
PM・MMは、容量、特に、冷却風の通路に対向する断
面積が異なるので、各マフラーPM・MMの冷却効果を
得るための適正な冷却風の風速、風量も、その断面積の
相違に伴って異なる。この点で、冷却風通路が独立に形
成されていれば、各マフラーPM・MMの断面積に適す
る冷却風速・風量が得られるように、それぞれの通路断
面積を適正に設定することができる。
As described above, in the sub chamber B, the cooling air passage for the front muffler PM and the cooling air passage for the main muffler MM are formed independently. Since the two mufflers PM / MM have different capacities, in particular, a cross-sectional area facing the passage of the cooling air, the appropriate cooling air flow velocity and air volume for obtaining the cooling effect of each muffler PM / MM also have a different cross-sectional area. Different with the difference. At this point, if the cooling air passages are formed independently, the respective passage cross-sectional areas can be appropriately set so as to obtain the cooling air velocity and the air flow suitable for the cross-sectional area of each muffler PM / MM.

【0017】例えば、前置マフラーPMとメインマフラ
ーMMの各断面積(冷却風の通路に対向する断面積)を
各々SPM・SMMとした場合に、SPM×100/(SPM
MM)=30〜40%(SMM×100/(SPM+SMM
=60〜70%)とする。この場合に、冷却風通路B1
・B2の断面積(冷却風の通過方向に対向する断面積)
も、この比率に比例させて設定する。即ち、各冷却風通
路B1・B2の各断面積を各々SB1・SB2とすれば、S
B1×100/(SB1+SB2)=30〜40%(SB2×1
00/(SB1+SB2)=60〜70%)となる。また、
図6の如く吐出用仕切板12・13を使用する場合に
は、各吐出用仕切板12・13の面積を各々S12・S13
とした場合に、S12×100/(S12+S13)=30〜
40%(S 13×100/(S12+S13)=60〜70
%)とする。
For example, the front muffler PM and the main muffler
-The cross-sectional area of each MM (the cross-sectional area facing the cooling air passage)
Each SPM・ SMM, SPM× 100 / (SPM+
SMM) = 30-40% (SMM× 100 / (SPM+ SMM)
= 60-70%). In this case, the cooling air passage B1
・ Cross-sectional area of B2 (cross-sectional area facing the direction of passage of cooling air)
Is also set in proportion to this ratio. That is, each cooling ventilation
The cross-sectional area of each of the roads B1 and B2 is SB1・ SB2Then S
B1× 100 / (SB1+ SB2) = 30-40% (SB2× 1
00 / (SB1+ SB2) = 60-70%). Also,
When using the discharge partition plates 12 and 13 as shown in FIG.
Indicates that the area of each of the discharge partition plates 12 and 13 is S12・ S13
, S12× 100 / (S12+ S13) = 30-
40% (S 13× 100 / (S12+ S13) = 60-70
%).

【0018】各マフラーPM・MMに対する冷却風通路
B1・B2を独立形成した場合、以上のように各マフラ
ーの冷却効果を最も得られるように冷却風通路B1・B
2の面積設定ができる上に、それぞれの冷却風通路は短
縮化することができ(一系統であれば、直列的に冷却風
通路を形成することとなる。)、通過時の冷却風への抵
抗も低減し、冷却風量を十分に確保でき、この面でも冷
却効率の向上に繋がるのである。そして、このように、
防音ケース1内を、主室Aと、高温となる副室Bとに区
画し、しかも副室B内において各マフラーPM・MMに
対する冷却風通路B1・B2を独立形成することによ
り、防音ケース1内のヒートバランスを適正化すること
ができるのである。
When the cooling air passages B1 and B2 for the respective mufflers PM and MM are formed independently, the cooling air passages B1 and B2 are formed so that the cooling effect of each muffler can be obtained as described above.
2 can be set, and each cooling air passage can be shortened (in the case of one system, the cooling air passage is formed in series), and the cooling air passage to the cooling air at the time of passage is reduced. The resistance is also reduced, and a sufficient amount of cooling air can be secured, which also leads to an improvement in cooling efficiency. And like this,
The inside of the soundproof case 1 is divided into a main room A and a sub-room B where the temperature is high, and the cooling air passages B1 and B2 for the respective mufflers PM and MM are independently formed in the sub-room B, so that the soundproof case 1 is formed. The heat balance inside can be optimized.

【0019】更に、冷却風通路B1・B2に独立分岐さ
せるのが、仕切壁3によるものであって、通路形成が容
易にでき、低コスト化、コンパクト化にも貢献し、ま
た、仕切壁3にて囲まれるメンテナンス部分、即ち、レ
ギュレーターレバー5を配設する部分を形成し、この部
位にメンテナンス用開口部(運転調整用蓋4を取り付け
た開口部)を配置することで、エンジンメンテナンスも
容易化できる。
Further, the independent branch into the cooling air passages B1 and B2 is made by the partition wall 3, which facilitates the formation of the passage and contributes to cost reduction and compactness. A maintenance part surrounded by is formed, that is, a part where the regulator lever 5 is disposed, and a maintenance opening (an opening to which the operation adjustment lid 4 is attached) is disposed in this part, so that engine maintenance is also easy. Can be

【0020】[0020]

【発明の効果】本発明は以上のように構成したので、次
のような効果を奏する。即ち、請求項1の如く構成する
ことで、二個のマフラーを独立して冷却できるので、冷
却風通路が一系統である場合のように、片方のマフラー
に、もう一方のマフラーを冷却した後の冷却風を当て
て、冷却効果を損ねるという事態を発生せず、各マフラ
ーの冷却効果を向上でき、防音ケース内を主室と副室と
に区画することと相まって、防音ケース内のヒートバラ
ンスも適正化できる。また、各マフラーに対しての冷却
風通路をそれぞれ短縮化することができるので、各通路
における冷却風の通過抵抗も低減されることとなり、各
マフラーに対して、冷却風量を十分に確保でき、各マフ
ラーの冷却効率を向上できる。
As described above, the present invention has the following advantages. That is, since the two mufflers can be cooled independently by configuring as in claim 1, after cooling the other muffler to one muffler as in the case where the cooling air passage is a single system. The cooling effect of each muffler can be improved without impairing the cooling effect by applying the cooling air of, and the heat balance in the soundproof case is combined with the partitioning of the soundproof case into a main room and a sub room. Can also be optimized. In addition, since the cooling air passages for each muffler can be shortened, the passage resistance of the cooling air in each passage is also reduced, and a sufficient amount of cooling air can be secured for each muffler. The cooling efficiency of each muffler can be improved.

【0021】また、請求項2の如く構成することで、メ
ンテナンス用の開口部を囲む(即ちメンテナンス用とし
て設けた)仕切壁を、そのまま冷却風通路の一部として
活用できるため、通路形成が容易化し、低コスト化、コ
ンパクト化に貢献する。またエンジンメンテナンス面で
も、該仕切壁にて囲まれる開口部を配設することで、容
易化するという効果を得る。
According to the second aspect of the present invention, the partition wall surrounding the maintenance opening (that is, provided for maintenance) can be used as a part of the cooling air passage as it is, so that the passage can be easily formed. And contribute to cost reduction and compactness. Also, in terms of engine maintenance, by providing an opening surrounded by the partition wall, an effect of facilitating the maintenance can be obtained.

【0022】そして、請求項3の如く構成することで、
各マフラーの容量に合わせた冷却風通路面積の設定によ
り、最適な冷却風の風速、風量を得、各マフラーを最適
に冷却できる。また、防音ケース内部の冷却効率も向上
する。
[0022] By configuring as in claim 3,
By setting the cooling air passage area in accordance with the capacity of each muffler, it is possible to obtain the optimal wind speed and amount of the cooling air and to optimally cool each muffler. Also, the cooling efficiency inside the soundproof case is improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る防音型エンジン作業機の内部副室
B側斜視図である。
FIG. 1 is a perspective view of an internal sub-chamber B side of a soundproof engine working machine according to the present invention.

【図2】同じく主室A側斜視図である。FIG. 2 is a perspective view of a main chamber A side.

【図3】同じく内部側面図である。FIG. 3 is an internal side view of the same.

【図4】同じく内部平面図である。FIG. 4 is an internal plan view of the same.

【図5】同じく内部後面図である。FIG. 5 is an internal rear view of the same.

【図6】同じく吐出用仕切板12・13を配設した場合
の内部副室側斜視図である。
FIG. 6 is a perspective view of the internal sub-chamber when the discharge partition plates 12 and 13 are provided.

【符号の説明】[Explanation of symbols]

E エンジン W 作業機 T 燃料タンク AC エアクリーナー PM 前置マフラー MM メインマフラー A 主室 B 副室 1 防音ケース 1a 外気導入口 1b 排風口 2 仕切板 3 仕切壁 4 運転調整用蓋 5 レギュレーターレバー 6 排風スクロール 6a 出口 7 冷却ファン 9 第一排気管 10 第二排気管 11 第三排気管 12 吐出用仕切板 12a 冷却風吐出孔 13 吐出用仕切板 13a 冷却風吐出孔 E engine W work machine T fuel tank AC air cleaner PM front muffler MM main muffler A main room B sub-chamber 1 soundproof case 1a outside air inlet 1b exhaust vent 2 partition plate 3 partition wall 4 operation adjustment lid 5 regulator lever 6 exhaust Wind scroll 6a Outlet 7 Cooling fan 9 First exhaust pipe 10 Second exhaust pipe 11 Third exhaust pipe 12 Discharge partition plate 12a Cooling air discharge hole 13 Discharge partition plate 13a Cooling air discharge hole

───────────────────────────────────────────────────── フロントページの続き (72)発明者 福井 宏次 大阪府大阪市北区茶屋町1番32号 ヤンマ ーディーゼル株式会社内 (72)発明者 織田 一己 大阪府大阪市北区茶屋町1番32号 ヤンマ ーディーゼル株式会社内 (72)発明者 福島 孝 大阪府大阪市北区茶屋町1番32号 ヤンマ ーディーゼル株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Koji Fukui, Inventor 1-32 Chaya-cho, Kita-ku, Osaka, Japan Inside Yanmar Diesel Co., Ltd. (72) Kazumi Oda 1-32, Chaya-cho, Kita-ku, Osaka, Osaka No. Yanmar Diesel Co., Ltd. (72) Inventor Takashi Fukushima 1-32 Chayacho, Kita-ku, Osaka City, Osaka Yanmar Diesel Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 防音ケースの内部を仕切板により主室と
副室に区画し、主室にはエンジン及び作業機を、副室に
は二個のマフラーを配置し、主室からの冷却排風をマフ
ラー冷却風として副室内に導入する構成とすると共に、
該副室内に配置する二個のマフラーに対する冷却風通路
を独立形成したことを特徴とする防音型エンジン作業
機。
The interior of a soundproof case is divided into a main chamber and a sub-chamber by a partition plate, an engine and a working machine are arranged in the main chamber, and two mufflers are arranged in the sub-chamber. A configuration in which the wind is introduced into the sub-chamber as muffler cooling wind,
A soundproof engine working machine wherein cooling air passages for two mufflers arranged in the sub-chamber are formed independently.
【請求項2】 防音ケースの内部を仕切板により主室と
副室に区画し、主室にはエンジン及び作業機を、副室に
は二個のマフラーを配置し、主室からの冷却排風をマフ
ラー冷却風として副室内に導入する構成とすると共に、
該副室内にて、メンテナンス用開口部を囲むように仕切
壁を配設し、該開口部を含む仕切壁の内側と、その外側
に配設するマフラーとを区画し、該仕切壁にてマフラー
冷却風通路の一部を形成する構成としたことを特徴とす
る防音型エンジン作業機。
2. The interior of the soundproof case is divided into a main chamber and a sub-chamber by a partition plate, an engine and a working machine are arranged in the main chamber, and two mufflers are arranged in the sub-chamber. A configuration in which the wind is introduced into the sub-chamber as muffler cooling wind,
In the sub-chamber, a partition wall is provided so as to surround the maintenance opening, and an inside of the partition wall including the opening and a muffler provided outside the partition wall are partitioned, and the muffler is provided by the partition wall. A soundproof engine working machine, wherein a part of a cooling air passage is formed.
【請求項3】 請求項1記載の防音型エンジン作業機に
おいて、各冷却風通路における吐出部と連絡部との面積
比率を、各マフラーの容量に応じて設定したことを特徴
とする防音型エンジン作業機。
3. The soundproof engine working machine according to claim 1, wherein the area ratio between the discharge portion and the connection portion in each cooling air passage is set according to the capacity of each muffler. Work machine.
JP16933596A 1996-06-28 1996-06-28 Soundproof engine working machine Expired - Fee Related JP3412790B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16933596A JP3412790B2 (en) 1996-06-28 1996-06-28 Soundproof engine working machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16933596A JP3412790B2 (en) 1996-06-28 1996-06-28 Soundproof engine working machine

Publications (2)

Publication Number Publication Date
JPH108991A true JPH108991A (en) 1998-01-13
JP3412790B2 JP3412790B2 (en) 2003-06-03

Family

ID=15884655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16933596A Expired - Fee Related JP3412790B2 (en) 1996-06-28 1996-06-28 Soundproof engine working machine

Country Status (1)

Country Link
JP (1) JP3412790B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905982A1 (en) * 2006-09-29 2008-04-02 HONDA MOTOR CO., Ltd. Machine provided with internal combustion engine and generator
WO2014163078A1 (en) * 2013-04-03 2014-10-09 日立工機株式会社 Cooling engine, engine-operated vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905982A1 (en) * 2006-09-29 2008-04-02 HONDA MOTOR CO., Ltd. Machine provided with internal combustion engine and generator
US7452256B2 (en) 2006-09-29 2008-11-18 Honda Motor Co., Ltd. Machine provided with internal combustion engine and generator
WO2014163078A1 (en) * 2013-04-03 2014-10-09 日立工機株式会社 Cooling engine, engine-operated vehicle

Also Published As

Publication number Publication date
JP3412790B2 (en) 2003-06-03

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