JP2021042674A - Vehicle cooling device - Google Patents

Vehicle cooling device Download PDF

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JP2021042674A
JP2021042674A JP2019162864A JP2019162864A JP2021042674A JP 2021042674 A JP2021042674 A JP 2021042674A JP 2019162864 A JP2019162864 A JP 2019162864A JP 2019162864 A JP2019162864 A JP 2019162864A JP 2021042674 A JP2021042674 A JP 2021042674A
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radiator
electric fan
fan
vehicle
cooling device
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友志 岩瀬
Tomoyuki Iwase
友志 岩瀬
篤 山下
Atsushi Yamashita
篤 山下
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

To provide a vehicle cooling device which enables reduction of noise of a cooling fan while inhibiting hot air from coming around an inlet of an electric fan from a heat source disposed behind the electric fan.SOLUTION: A vehicle cooling device 10 includes: a radiator 2 for a fuel battery; an electric fan 3 disposed behind the radiator 2 for the fuel battery; and a fan shroud 4 which covers the rear side of the radiator 2 for the fuel battery in a periphery of the electric fan 3. The fan shroud 4 has an opening 41 which penetrates through the fan shroud 4 in an anteroposterior direction to allow travel wind of the vehicle to pass through the radiator 2 for the fuel battery. The fan shroud 4 is provided with a separation wall 42 protruding from between an outer periphery 34 of the electric fan 3 and the opening 41 to the radiator 2 for the fuel battery.SELECTED DRAWING: Figure 3

Description

本発明は、ラジエータと、電動ファンとを備える車両用冷却装置に関する。 The present invention relates to a vehicle cooling device including a radiator and an electric fan.

燃料電池用ラジエータの後方に電動ファンが配置され、電動ファンの後方に燃料電池スタック等が配置され、燃料電池スタック等から熱気が燃料電池用ラジエータの前方に回り込むことを防止するために、燃料電池用ラジエータの左右の端部と支柱との間に開閉可能な可動式の閉鎖板が設けられた車両用冷却装置が、特許文献1に開示されている。 An electric fan is arranged behind the radiator for the fuel cell, a fuel cell stack or the like is arranged behind the electric fan, and the fuel cell is used to prevent hot air from sneaking into the front of the radiator for the fuel cell from the fuel cell stack or the like. Patent Document 1 discloses a vehicle cooling device provided with a movable closing plate that can be opened and closed between the left and right ends of a fuel cell and a support column.

特開2008−173992号公報Japanese Unexamined Patent Publication No. 2008-173992

ところで、ラジエータとラジエータの後方に配置される電動ファンとを備える車両用冷却装置に、電動ファンの周囲でラジエータの後方側を覆うファンシュラウドを設ける場合がある。この場合、電動ファンの後方に配置された熱源から電動ファン入口へ熱気が回り込むことを抑制できるものの、ファンシュラウドに覆われた部分のラジエータを通った走行風が電動ファンに流入することによって電動ファンの騒音が大きくなる場合がある。 By the way, a vehicle cooling device including a radiator and an electric fan arranged behind the radiator may be provided with a fan shroud that covers the rear side of the radiator around the electric fan. In this case, although it is possible to prevent hot air from sneaking into the electric fan inlet from the heat source located behind the electric fan, the running wind that has passed through the radiator in the part covered by the fan shroud flows into the electric fan, so that the electric fan The noise may be louder.

そこで、本発明は、電動ファンの後方に配置された熱源から電動ファン入口へ熱気が回り込むことを抑制しつつ、冷却ファンの騒音を低減できる車両用冷却装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a vehicle cooling device capable of reducing noise of a cooling fan while suppressing hot air from sneaking into the electric fan inlet from a heat source arranged behind the electric fan.

本発明に係る車両用冷却装置は、ラジエータと、前記ラジエータの後方に配置される電動ファンと、前記電動ファンの周囲で前記ラジエータの後方側を覆うファンシュラウドと、を備える車両用冷却装置であって、前記ファンシュラウドは、前後に貫通して車両の走行風を前記ラジエータに通す開口部を有し、前記ファンシュラウドには、前記電動ファンの外周と前記開口部との間から前記ラジエータに向かって突出する分離壁が設けられていること、を特徴とする。 The vehicle cooling device according to the present invention is a vehicle cooling device including a radiator, an electric fan arranged behind the radiator, and a fan shroud that covers the rear side of the radiator around the electric fan. The fan shroud has an opening that penetrates the front and rear to allow the traveling wind of the vehicle to pass through the radiator, and the fan shroud faces the radiator from between the outer periphery of the electric fan and the opening. It is characterized in that a separating wall is provided so as to project.

本発明は、ファンシュラウドに開口部及び分離壁を設けることによって、ファンシュラウドに覆われた部分のラジエータを通った走行風を開口部に導いて、開口部からファンシュラウドの後方に流して、電動ファンに流入する空気の量を低減することができ、電動ファンから発生する騒音を低減することができる。また、ラジエータに向かって突出する分離壁によって、電動ファンの後方に配置された熱源から開口部を通って電動ファン入口に回り込もうとする熱気が遮られるため、電動ファンの後方に配置された熱源から電動ファン入口への熱気の回り込みを抑制することもできる。このように、本発明は、電動ファンの後方に配置された熱源から電動ファン入口への熱気の回り込みを抑制しつつ、電動ファンの騒音を低減することができる。 In the present invention, by providing an opening and a separation wall in the fan shroud, the traveling wind that has passed through the radiator of the portion covered by the fan shroud is guided to the opening and is allowed to flow from the opening to the rear of the fan shroud to be electrically operated. The amount of air flowing into the fan can be reduced, and the noise generated from the electric fan can be reduced. In addition, the separation wall protruding toward the radiator blocks the hot air from the heat source located behind the electric fan through the opening and wraps around to the electric fan inlet, so it is placed behind the electric fan. It is also possible to suppress the sneaking of hot air from the heat source to the electric fan inlet. As described above, the present invention can reduce the noise of the electric fan while suppressing the sneaking of hot air from the heat source arranged behind the electric fan to the inlet of the electric fan.

本開示の実施形態の車両用冷却装置の電動ファン及びファンシュラウドの前方視の図である。It is a front view view of the electric fan and the fan shroud of the vehicle cooling device of the embodiment of this disclosure. 本実施形態の車両用冷却装置の電動ファン及びファンシュラウドの図1におけるA−A線断面図と空調用ラジエータ及び燃料電池用ラジエータの上方視の図を並べて示した図である。It is a figure which showed the cross-sectional view taken along line AA in FIG. 1 of the electric fan and the fan shroud of the vehicle cooling system of this embodiment, and the top view view of the radiator for air conditioning and the radiator for a fuel cell side by side. 本実施形態の車両用冷却装置の電動ファン及びファンシュラウドの図1におけるB−B線断面図と空調用ラジエータ及び燃料電池用ラジエータの上方視の図を並べて示した図である。It is a figure which showed the cross-sectional view taken along line BB in FIG. 1 of the electric fan and the fan shroud of the vehicle cooling system of this embodiment, and the top view view of the radiator for air conditioning and the radiator for a fuel cell side by side.

以下、図面を参照しながら、本実施形態の車両用冷却装置10について説明する。以下説明する各図に示す矢印FR、矢印UP、矢印RHは、車両の前方向(進行方向)、上方向、右方向をそれぞれ示している。また、各矢印FR、UP、RHの反対方向は、それぞれ車両後方向、下方向、左方向を示す。以下、単に前後、左右、上下の方向を用いて説明する場合は、特に断りのない限り、車両前後方向の前後、車両左右方向(車両幅方向)の左右、車両上下方向の上下を示すものとする。 Hereinafter, the vehicle cooling device 10 of the present embodiment will be described with reference to the drawings. The arrows FR, UP, and RH shown in the drawings described below indicate the front direction (traveling direction), the upward direction, and the right direction of the vehicle, respectively. Further, the opposite directions of the arrows FR, UP, and RH indicate the vehicle rear direction, the downward direction, and the left direction, respectively. Hereinafter, when the explanation is simply made using the front-rear, left-right, and up-down directions, unless otherwise specified, the front-rear direction of the vehicle front-rear direction, the left-right direction of the vehicle left-right direction (vehicle width direction), and the up-down direction of the vehicle up-down direction are shown. To do.

本実施形態の車両用冷却装置10は、燃料電池自動車のフロントコンパートメント内の最前部に配置される。図2及び図3に示すように、車両用冷却装置10は、インバータ冷却用ラジエータ1と、インバータ冷却用ラジエータ1の後方に配置される燃料電池用ラジエータ2と、燃料電池用ラジエータ2の後方に配置される電動ファン3と、電動ファン3の周囲で燃料電池用ラジエータ2の後方側を覆うファンシュラウド4とを備える。フロントコンパートメント内には、電動ファン3及びファンシュラウド4の後方に、不図示の燃料電池スタック等の熱源が配置される。 The vehicle cooling device 10 of the present embodiment is arranged at the frontmost portion in the front compartment of the fuel cell vehicle. As shown in FIGS. 2 and 3, the vehicle cooling device 10 is located behind the radiator cooling radiator 1, the fuel cell radiator 2 arranged behind the inverter cooling radiator 1, and the fuel cell radiator 2. An electric fan 3 to be arranged and a fan shroud 4 that covers the rear side of the radiator 2 for a fuel cell around the electric fan 3 are provided. In the front compartment, a heat source such as a fuel cell stack (not shown) is arranged behind the electric fan 3 and the fan shroud 4.

図2に示すように、電動ファン3は回転軸31、プロペラ32及びモータ33を備える。そして、電動ファン3のプロペラ32は、ファンシュラウド4の内側で回転する。電動ファン3は、プロペラ32の回転により燃料電池用ラジエータ2側から空気を吸い出して後方に向かって風を送ることによって、インバータ冷却用ラジエータ1及び燃料電池用ラジエータ2を冷却することができる。なお、図1では電動ファン3の回転軸31及びプロペラ32の記載を省略している。 As shown in FIG. 2, the electric fan 3 includes a rotating shaft 31, a propeller 32, and a motor 33. Then, the propeller 32 of the electric fan 3 rotates inside the fan shroud 4. The electric fan 3 can cool the inverter cooling radiator 1 and the fuel cell radiator 2 by sucking air from the fuel cell radiator 2 side by rotating the propeller 32 and sending air toward the rear. In FIG. 1, the description of the rotating shaft 31 and the propeller 32 of the electric fan 3 is omitted.

図1に示すように、ファンシュラウド4は、前後に貫通して燃料電池自動車の走行風をインバータ冷却用ラジエータ1及び燃料電池用ラジエータ2に通す18箇所の開口部41を有する。電動ファン3の右側に9箇所の開口部41が上下方向に並ぶように形成され、電動ファン3の左側にも9箇所の開口部41が上下方向に並ぶように形成されている。開口部41はいずれも車両幅方向又は上下方向に長い長穴形状となっている。なお、図2はインバータ冷却用ラジエータ1及び燃料電池用ラジエータ2の上方視の図と共に電動ファン3及びファンシュラウド4の図1におけるA−A線断面図を示しており、図3はインバータ冷却用ラジエータ1及び燃料電池用ラジエータ2の上方視の図と共に電動ファン3及びファンシュラウド4の図1におけるB−B線断面図を示している。つまり、図3の左右両側に示されている開口部41は、いずれも下から4番目の開口部41である。図3に示すように、開口部41は、前方の入口よりも後方の出口の方が少し狭くなっている。 As shown in FIG. 1, the fan shroud 4 has 18 openings 41 that pass through the front and rear to pass the running wind of the fuel cell vehicle through the inverter cooling radiator 1 and the fuel cell radiator 2. Nine openings 41 are formed on the right side of the electric fan 3 so as to be arranged in the vertical direction, and nine openings 41 are also formed on the left side of the electric fan 3 so as to be arranged in the vertical direction. Each of the openings 41 has an elongated hole shape that is long in the vehicle width direction or the vertical direction. Note that FIG. 2 shows a cross-sectional view taken along the line AA in FIG. 1 of the electric fan 3 and the fan shroud 4 together with an upward view of the radiator cooling radiator 1 and the radiator 2 for the fuel cell, and FIG. 3 is for cooling the inverter. A sectional view taken along line BB in FIG. 1 of the electric fan 3 and the fan shroud 4 is shown together with an upward view of the radiator 1 and the radiator 2 for a fuel cell. That is, the openings 41 shown on both the left and right sides of FIG. 3 are the fourth openings 41 from the bottom. As shown in FIG. 3, the opening 41 is slightly narrower at the rear exit than at the front entrance.

そして、図2及び図3に示すように、ファンシュラウド4には、電動ファン3の外周34と開口部41との間から燃料電池用ラジエータ2に向かって突出する2つの円弧状の分離壁42が設けられている。図1に示すように、分離壁42は電動ファン3の左右両側に1つずつ配置されており、いずれの分離壁42も車両前方視で円弧形状となっている。 Then, as shown in FIGS. 2 and 3, the fan shroud 4 has two arc-shaped separation walls 42 projecting from between the outer circumference 34 of the electric fan 3 and the opening 41 toward the fuel cell radiator 2. Is provided. As shown in FIG. 1, one separation wall 42 is arranged on each of the left and right sides of the electric fan 3, and each of the separation walls 42 has an arc shape when viewed from the front of the vehicle.

このようにファンシュラウド4に開口部41及び分離壁42を設けることによって、図3に示すように、燃料電池自動車の走行中には、ファンシュラウド4に覆われた部分の燃料電池用ラジエータ2を通った走行風W2を開口部41に導いて、開口部41からファンシュラウド4の後方に流して、インバータ冷却用ラジエータ1及び燃料電池用ラジエータ2を冷却することができ、電動ファン3に流入する空気の量を低減することができる。更に、回転する電動ファン3に流入する冷却風W1が流れる通路と開口部41を通る走行風W2が流れる通路とが分離壁42により隔離され、冷却風W1と走行風W2との干渉を避けることができる。そのため、本実施形態の車両用冷却装置10は、電動ファン3から発生する騒音を低減することができる。電動ファン3の騒音は電動ファン3の回転の9次高調波が一番高く、2番目に高いのが7次高調波であるところ、騒音の評価試験において、9次高調波及び7次高調波をいずれも低減でき、騒音のオーバーオール値も低減できる結果が得られた。 By providing the opening 41 and the separation wall 42 in the fan shroud 4 in this way, as shown in FIG. 3, during the running of the fuel cell vehicle, the radiator 2 for the fuel cell in the portion covered by the fan shroud 4 is provided. The passing air W2 can be guided to the opening 41 and flowed from the opening 41 to the rear of the fan shroud 4 to cool the radiator cooling radiator 1 and the fuel cell radiator 2 and flow into the electric fan 3. The amount of air can be reduced. Further, the passage through which the cooling air W1 flowing into the rotating electric fan 3 flows and the passage through which the traveling wind W2 passing through the opening 41 flows are separated by the separation wall 42 to avoid interference between the cooling air W1 and the traveling wind W2. Can be done. Therefore, the vehicle cooling device 10 of the present embodiment can reduce the noise generated from the electric fan 3. As for the noise of the electric fan 3, the 9th harmonic of the rotation of the electric fan 3 is the highest, and the 7th harmonic is the second highest. In the noise evaluation test, the 9th harmonic and the 7th harmonic are The results were obtained that all of the noise levels could be reduced and the noise overall value could also be reduced.

また、車両用冷却装置10は、燃料電池自動車が停車中に、電動ファン3及びファンシュラウド4の後方に配置されている燃料電池スタック等の熱源から熱気が図3に示すW3のように開口部41を通って電動ファン3の前方に回り込もうとしても、分離壁42によって遮られるため、ファンシュラウド4の後方から熱気が電動ファン3の前方に回り込むことを抑制することができる。そのため、本実施形態の車両用冷却装置10は、電動ファン3の後方に配置された熱源から電動ファン3入口への熱気の回り込みを抑制しつつ、電動ファン3の騒音を低減できる。 Further, in the vehicle cooling device 10, hot air is emitted from a heat source such as a fuel cell stack arranged behind the electric fan 3 and the fan shroud 4 while the fuel cell vehicle is stopped, as shown in W3 shown in FIG. Even if an attempt is made to wrap around to the front of the electric fan 3 through 41, it is blocked by the separation wall 42, so that it is possible to prevent hot air from wrapping around to the front of the electric fan 3 from behind the fan shroud 4. Therefore, the vehicle cooling device 10 of the present embodiment can reduce the noise of the electric fan 3 while suppressing the sneaking of hot air from the heat source arranged behind the electric fan 3 to the inlet of the electric fan 3.

<実施形態の補足>
本開示の車両用冷却装置は、上述した形態に限定されず、本開示の要旨の範囲内において種々の形態にて実施できる。例えば、車両用冷却装置が搭載される車両は、燃料電池自動車に限らず、エンジンを走行用動力源とした車両やハイブリッド車両などであってもよい。また、上述の形態では、インバータ冷却用ラジエータ及び燃料電池用ラジエータが搭載されているが、これらのラジエータの前方に更に空調用ラジエータが搭載されていてもよいし、インバータ冷却用ラジエータや燃料電池用ラジエータの代わりに空調用ラジエータやエンジン冷却用ラジエータが搭載されていてもよい。また、開口部の形状は長穴形状とは異なる形状であってもよく、開口部の数は18箇所とは異なる数であってもよい。また、分離壁の車両前方視の形状は、電動ファンの外周と開口部との間からラジエータに向かって突出していれば、円弧形状とは異なる形状であってもよい。
<Supplement to the embodiment>
The vehicle cooling device of the present disclosure is not limited to the above-described form, and can be implemented in various forms within the scope of the gist of the present disclosure. For example, the vehicle equipped with the vehicle cooling device is not limited to a fuel cell vehicle, and may be a vehicle using an engine as a power source for traveling, a hybrid vehicle, or the like. Further, in the above-described embodiment, the radiator for cooling the inverter and the radiator for the fuel cell are mounted, but a radiator for air conditioning may be further mounted in front of these radiators, and the radiator for cooling the inverter and the radiator for the fuel cell may be mounted. Instead of the radiator, a radiator for air conditioning or a radiator for cooling the engine may be installed. Further, the shape of the openings may be different from the shape of the elongated holes, and the number of openings may be different from the number of 18 locations. Further, the shape of the separation wall when viewed from the front of the vehicle may be different from the arc shape as long as it projects from between the outer circumference of the electric fan and the opening toward the radiator.

1 インバータ冷却用ラジエータ、2 燃料電池用ラジエータ、3 電動ファン、4 ファンシュラウド、10 車両用冷却装置、31 回転軸、32 プロペラ、33 モータ、34 外周、41 開口部、42 分離壁。
1 Inverter cooling radiator, 2 Fuel cell radiator, 3 Electric fan, 4 Fan shroud, 10 Vehicle cooling device, 31 Rotating shaft, 32 Propeller, 33 motor, 34 outer circumference, 41 opening, 42 separation wall.

Claims (1)

ラジエータと、
前記ラジエータの後方に配置される電動ファンと、
前記電動ファンの周囲で前記ラジエータの後方側を覆うファンシュラウドと、を備える車両用冷却装置であって、
前記ファンシュラウドは、前後に貫通して車両の走行風を前記ラジエータに通す開口部を有し、
前記ファンシュラウドには、前記電動ファンの外周と前記開口部との間から前記ラジエータに向かって突出する分離壁が設けられていること、を特徴とする車両用冷却装置。
With the radiator
An electric fan located behind the radiator and
A vehicle cooling device including a fan shroud that covers the rear side of the radiator around the electric fan.
The fan shroud has an opening that penetrates the front and rear to allow the running wind of the vehicle to pass through the radiator.
A vehicle cooling device, characterized in that the fan shroud is provided with a separation wall that projects from between the outer periphery of the electric fan and the opening toward the radiator.
JP2019162864A 2019-09-06 2019-09-06 Vehicle cooling device Pending JP2021042674A (en)

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JP2019162864A Pending JP2021042674A (en) 2019-09-06 2019-09-06 Vehicle cooling device

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62195624U (en) * 1986-05-31 1987-12-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62195624U (en) * 1986-05-31 1987-12-12

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