JPH09118141A - Cooling system of engine - Google Patents

Cooling system of engine

Info

Publication number
JPH09118141A
JPH09118141A JP27911595A JP27911595A JPH09118141A JP H09118141 A JPH09118141 A JP H09118141A JP 27911595 A JP27911595 A JP 27911595A JP 27911595 A JP27911595 A JP 27911595A JP H09118141 A JPH09118141 A JP H09118141A
Authority
JP
Japan
Prior art keywords
cooling fan
shroud
radiator
side wall
cooling
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
Application number
JP27911595A
Other languages
Japanese (ja)
Inventor
Hiroaki Takeda
弘明 武田
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.)
Sumitomo SHI Construction Machinery Co Ltd
Original Assignee
Sumitomo SHI Construction Machinery 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 Sumitomo SHI Construction Machinery Co Ltd filed Critical Sumitomo SHI Construction Machinery Co Ltd
Priority to JP27911595A priority Critical patent/JPH09118141A/en
Publication of JPH09118141A publication Critical patent/JPH09118141A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PROBLEM TO BE SOLVED: To eliminate the occurrence of a strong pressure change by rotation of a cooling fan, and reduce generation of a noise by swelling and expanding a part where the blade end of the cooling fan and a side wall of a shroud approach each other to the outside. SOLUTION: A cooling fan 15 is eccentrically arranged from a central position of a radiator 13. A shroud 17 is formed according to a shape of the radiator 13, but swelling expanding parts 20 and 21 are formed by projecting two places of an upper position and a right position of the axis of the cooling fan 15 to the outside. So far, the blade end of the cooling fan 15 and a side wall of the shroud 17 approach each other in this position, but since the swelling expanding parts 20 and 21 are arranged, a place where an interval between the blade end of the cooling fan 15 and the side wall of the shroud 17 locally becomes small is eliminated. Therefore, strong pressure by rotation of the cooling fan 15 is not generated, and generation of a noise can be reduced.

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】本発明はエンジンの冷却装置
に関するものであり、特に、クーリングファンをシュラ
ウドにて被蔽した冷却装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine cooling device, and more particularly to a cooling device in which a cooling fan is covered with a shroud.

【0002】[0002]

【従来の技術】従来のエンジンの冷却装置を図4乃至図
6に示す。図4はラジエータ1の略中心位置にクーリン
グファン2が設置されている場合を示し、図中ラジエー
タ1の前方にクーリングファン2を回転自在に設置し、
ラジエータ1とクーリングファン2との間をシュラウド
3にて被蔽してある。該シュラウド3にてクーリングフ
ァン2を被蔽することにより、クーリングファン2の風
量を増加して効率を向上させている。該シュラウド3は
ラジエータ1の形状に合わせて箱形に形成され、該シュ
ラウド3の正面にクーリングファン2の回転軌跡の外周
より僅かに大きい孔4が開穿されている。
2. Description of the Related Art A conventional engine cooling device is shown in FIGS. FIG. 4 shows a case where the cooling fan 2 is installed at a substantially central position of the radiator 1, and the cooling fan 2 is rotatably installed in front of the radiator 1 in the drawing,
A shroud 3 covers between the radiator 1 and the cooling fan 2. By covering the cooling fan 2 with the shroud 3, the air volume of the cooling fan 2 is increased and the efficiency is improved. The shroud 3 is formed in a box shape according to the shape of the radiator 1, and a hole 4 slightly larger than the outer circumference of the rotation locus of the cooling fan 2 is formed in the front surface of the shroud 3.

【0003】図5はラジエータ1の中心位置から偏心し
てクーリングファン2が設置されている場合を示し、ク
ーリングファンの軸心5の上方位置P1 及び左方位置P
2 の2個所で、クーリングファン2の翼端とシュラウド
3の側壁とが接近している。
FIG. 5 shows the case where the cooling fan 2 is installed eccentrically from the center position of the radiator 1, and the position P 1 above the axis 5 of the cooling fan and the position P to the left thereof are shown.
2 of two positions, and the side wall of the blade tip and the shroud 3 of the cooling fan 2 is approaching.

【0004】また、図6はクーリングファン2の直径が
大でありシュラウド3の外径に近い場合を示し、クーリ
ングファンの軸心5の上方位置P3 及び左方位置P4
びに右方位置P5 の3個所で、クーリングファン2の翼
端とシュラウド3の側壁とが接近している。
FIG. 6 shows a case where the cooling fan 2 has a large diameter and is close to the outer diameter of the shroud 3, and the upper position P 3 and the left position P 4 and the right position P of the axis 5 of the cooling fan are shown. At 3 points of 5 , the blade tip of the cooling fan 2 and the side wall of the shroud 3 are close to each other.

【0005】[0005]

【発明が解決しようとする課題】従来のエンジンの冷却
装置には、ラジエータ1の形状に合わせて箱形に形成さ
れシュラウド3が設けられているが、図5に示したよう
に、ラジエータ1の中心位置から偏心してクーリングフ
ァン2が設置されている場合や、図6に示したように、
クーリングファン2の直径がシュラウド3の外径に近い
場合には、クーリングファンの軸心5の上方位置P1
3 及び左右位置P2 ,P4 ,P5 等の個所で、クーリ
ングファン2の翼端とシュラウド3の側壁とが接近す
る。
A conventional engine cooling device is provided with a shroud 3 formed in a box shape so as to match the shape of the radiator 1. However, as shown in FIG. When the cooling fan 2 is installed eccentrically from the center position, or as shown in FIG.
When the diameter of the cooling fan 2 is close to the outer diameter of the shroud 3, the position P 1 above the axis 5 of the cooling fan,
The blade tip of the cooling fan 2 and the side wall of the shroud 3 approach each other at points such as P 3 and left and right positions P 2 , P 4 , P 5 .

【0006】これらP1 乃至P5 の個所では、クーリン
グファン2の翼端とシュラウド3の側壁との間隔が極め
て小となっているので、クーリングファン2の回転によ
り強い圧力変動が起こり、この圧力変動によって大きな
騒音が発生する。
At these points P 1 to P 5 , since the distance between the blade tip of the cooling fan 2 and the side wall of the shroud 3 is extremely small, a strong pressure fluctuation occurs due to the rotation of the cooling fan 2, and this pressure is increased. A large noise is generated due to the fluctuation.

【0007】そこで、シュラウドによりクーリングファ
ンを被蔽したエンジンの冷却装置に於いて、クーリング
ファンから発生する騒音を低減するために解決すべき技
術的課題が生じてくるのであり、本発明はこの課題を解
決することを目的とする。
Therefore, in the engine cooling device in which the cooling fan is covered by the shroud, there arises a technical problem to be solved in order to reduce the noise generated from the cooling fan, and the present invention has this problem. The purpose is to solve.

【0008】[0008]

【課題を解決するための手段】本発明は上記目的を達成
するために提案されたものであり、ラジエータの形状に
合わせて箱形に形成されたシュラウドによりクーリング
ファンを被蔽した冷却装置に於いて、前記クーリングフ
ァンの翼端とシュラウドの側壁とが接近する部分を外側
へ膨拡させたエンジンの冷却装置を提供するものであ
る。
DISCLOSURE OF THE INVENTION The present invention has been proposed in order to achieve the above object, and is a cooling device in which a cooling fan is covered by a box-shaped shroud conforming to the shape of a radiator. Further, the present invention provides an engine cooling device in which a portion where the blade tip of the cooling fan and the side wall of the shroud approach each other is expanded outward.

【0009】[0009]

【発明の実施の形態】以下、本発明の実施の形態を図面
に従って詳述する。図1は建設機械のエンジンルーム1
0内に設けられた冷却装置11を示し、エンジン12の
前方にラジエータ13を設置し、ラジエータ13の前面
にオイルクーラ14を固着してある。そして、エンジン
12の動力によりクーリングファン15を回転し、フー
ド16の外部からエアを取り入れて、ラジエータ13及
びオイルクーラ14の放熱を行っている。
Embodiments of the present invention will be described below in detail with reference to the drawings. Figure 1 shows an engine room 1 for construction machinery.
0 shows a cooling device 11 provided inside 0, a radiator 13 is installed in front of the engine 12, and an oil cooler 14 is fixed to the front surface of the radiator 13. Then, the cooling fan 15 is rotated by the power of the engine 12 to take in air from the outside of the hood 16 to radiate heat from the radiator 13 and the oil cooler 14.

【0010】また、ラジエータ13にシュラウド17を
固着してクーリングファン15を被蔽することにより、
クーリングファン15の風量を増加して効率を向上させ
る。該シュラウド17はラジエータ15の形状に合わせ
て箱形に形成され、該シュラウド17の正面にクーリン
グファン15の回転軌跡の外周より僅かに大きい孔18
が開穿されている。
Further, by fixing the shroud 17 to the radiator 13 and covering the cooling fan 15,
The efficiency is improved by increasing the air volume of the cooling fan 15. The shroud 17 is formed in a box shape according to the shape of the radiator 15, and a hole 18 slightly larger than the outer circumference of the rotation locus of the cooling fan 15 is formed on the front surface of the shroud 17.
Has been perforated.

【0011】図2はラジエータ13の中心位置から偏心
してクーリングファン15が設置されている場合を示
し、シュラウド17はラジエータ13の形状に合わせて
箱形に形成されているが、クーリングファンの軸心19
の上方位置及び左方位置の2個所を外側へ突出させて膨
拡部20,21を形成してある。
FIG. 2 shows a case where the cooling fan 15 is installed eccentrically from the center position of the radiator 13. The shroud 17 is formed in a box shape in accordance with the shape of the radiator 13, but the axial center of the cooling fan is shown. 19
The bulging portions 20 and 21 are formed by projecting outward at two places, the upper position and the left position.

【0012】従来はこの位置でクーリングファン15の
翼端とシュラウド17の側壁とが接近していたが、上記
膨拡部20,21を設けることにより、クーリングファ
ン15の翼端とシュラウド17の側壁との間隔が局部的
に小となる個所がなくなり、クーリングファン15の回
転による強い圧力変動が起きず、騒音の発生を低減する
ことができる。
Conventionally, the blade tip of the cooling fan 15 and the side wall of the shroud 17 were close to each other at this position. However, by providing the expanded portions 20 and 21, the blade tip of the cooling fan 15 and the side wall of the shroud 17 are provided. Since there is no part where the interval between and is locally small, strong pressure fluctuation due to the rotation of the cooling fan 15 does not occur, and the generation of noise can be reduced.

【0013】図3はクーリングファン15の直径が大で
ありシュラウド17の外径に近い場合を示し、クーリン
グファンの軸心19の上方位置及び左方位置並びに右方
位置の3個所を外側へ突出させて膨拡部22,23,2
4を形成してある。
FIG. 3 shows a case in which the cooling fan 15 has a large diameter and is close to the outer diameter of the shroud 17, and the three positions of the cooling fan axial center 19 above and to the left and to the right are projected outward. Let the expanded parts 22, 23, 2
4 is formed.

【0014】この場合も、上記膨拡部22,23,24
を設けることにより、クーリングファン15の翼端とシ
ュラウド17の側壁との間隔が局部的に小となる個所が
なくなり、クーリングファン15の回転による騒音の発
生を低減することができる。
Also in this case, the expanded portions 22, 23, 24
By providing the above, there is no portion where the distance between the blade tip of the cooling fan 15 and the side wall of the shroud 17 is locally small, and the generation of noise due to the rotation of the cooling fan 15 can be reduced.

【0015】尚、本発明は、本発明の精神を逸脱しない
限り種々の改変を為すことができ、そして、本発明が該
改変されたものに及ぶことは当然である。
The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention extends to such modifications.

【0016】[0016]

【発明の効果】以上説明したように、本発明ではクーリ
ングファンの翼端とシュラウドの側壁とが接近する部分
を外側へ膨拡させたことにより、クーリングファンの翼
端とシュラウドの側壁との間隔が局部的に小となる個所
がなくなり、クーリングファンの回転による強い圧力変
動が起きず、騒音の発生を低減することができる。
As described above, according to the present invention, the gap between the blade tip of the cooling fan and the side wall of the shroud is expanded by expanding the portion where the blade tip of the cooling fan and the side wall of the shroud come close to each other. However, there are no locally small points, strong pressure fluctuation due to rotation of the cooling fan does not occur, and noise generation can be reduced.

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

【図1】本発明の実施の形態を示し、エンジンルーム内
に設けられた冷却装置の一部切欠側面図。
FIG. 1 is a partially cutaway side view of a cooling device provided in an engine room, showing an embodiment of the present invention.

【図2】ラジエータの中心位置から偏心してクーリング
ファンが設置されている冷却装置の斜視図。
FIG. 2 is a perspective view of a cooling device in which a cooling fan is installed eccentrically from a center position of a radiator.

【図3】クーリングファンの直径がシュラウドの外径近
くまでに設置されている冷却装置の斜視図。
FIG. 3 is a perspective view of a cooling device in which a cooling fan is installed so that its diameter is close to the outer diameter of the shroud.

【図4】従来のラジエータの略中心位置にクーリングフ
ァンが設置されている冷却装置の斜視図。
FIG. 4 is a perspective view of a cooling device in which a cooling fan is installed at a substantially central position of a conventional radiator.

【図5】従来のラジエータの中心位置から偏心してクー
リングファンが設置されている冷却装置の斜視図。
FIG. 5 is a perspective view of a conventional cooling device in which a cooling fan is installed eccentrically from a center position of a radiator.

【図6】従来のクーリングファンの直径がシュラウドの
外径近くまでに設置されている冷却装置の斜視図。
FIG. 6 is a perspective view of a cooling device in which a diameter of a conventional cooling fan is installed up to near an outer diameter of a shroud.

【符号の説明】[Explanation of symbols]

11 冷却装置 13 ラジエータ 15 クーリングファン 17 シュラウド 20,21 膨拡部 22,23,24 膨拡部 11 Cooling Device 13 Radiator 15 Cooling Fan 17 Shroud 20,21 Expansion Part 22,23,24 Expansion Part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ラジエータの形状に合わせて箱形に形成
されたシュラウドによりクーリングファンを被蔽した冷
却装置に於いて、前記クーリングファンの翼端とシュラ
ウドの側壁とが接近する部分を外側へ膨拡させたことを
特徴とするエンジンの冷却装置。
1. In a cooling device in which a cooling fan is covered by a box-shaped shroud that matches the shape of a radiator, a portion where a blade end of the cooling fan and a side wall of the shroud approach each other expands outward. An engine cooling device characterized by being expanded.
JP27911595A 1995-10-26 1995-10-26 Cooling system of engine Pending JPH09118141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27911595A JPH09118141A (en) 1995-10-26 1995-10-26 Cooling system of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27911595A JPH09118141A (en) 1995-10-26 1995-10-26 Cooling system of engine

Publications (1)

Publication Number Publication Date
JPH09118141A true JPH09118141A (en) 1997-05-06

Family

ID=17606637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27911595A Pending JPH09118141A (en) 1995-10-26 1995-10-26 Cooling system of engine

Country Status (1)

Country Link
JP (1) JPH09118141A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009028670A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
WO2009028666A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
WO2009028669A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
WO2009028665A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009028670A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
WO2009028666A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
WO2009028669A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
WO2009028665A1 (en) 2007-08-31 2009-03-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
US9228320B2 (en) 2007-08-31 2016-01-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
US9228318B2 (en) 2007-08-31 2016-01-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
US9228317B2 (en) 2007-08-31 2016-01-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same
US9228319B2 (en) 2007-08-31 2016-01-05 Komatsu Ltd. Cooling device and construction machine or working machine equipped with the same

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