JP2007153260A - Structure for cooling heat exchanger for vehicle - Google Patents

Structure for cooling heat exchanger for vehicle Download PDF

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Publication number
JP2007153260A
JP2007153260A JP2005354628A JP2005354628A JP2007153260A JP 2007153260 A JP2007153260 A JP 2007153260A JP 2005354628 A JP2005354628 A JP 2005354628A JP 2005354628 A JP2005354628 A JP 2005354628A JP 2007153260 A JP2007153260 A JP 2007153260A
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outside air
vehicle
heat exchanger
front bumper
bumper
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Tomohiro Sudo
知宏 須藤
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Denso Corp
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Denso Corp
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  • Air-Conditioning For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To suppress deterioration of cooling performance of a condenser and a radiator. <P>SOLUTION: Side surfaces 33 of a front bumper 33 on a rear side of the vehicle are provided with four opening parts 33a. A rear end of the front bumper 30 on both sides thereof is provided with an opening part 35 as an air lead-in port. A bumper cover 50 is provided with two air take-in ports 41, and each of the air take-in ports 41 is connected to the opening part 33a of the front bumper 30. With rotation of an electric blower 25, the air flows into each of the air take-in ports 41 of the bumper cover 50, and this air flows into a hollow part 32 from the opening part 35 of the front bumper 30. Then, the air flows to a condenser 21 and a radiator 23 of a cooling unit 20 from the opening part 33a of the front bumper 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両用熱交換器の冷却構造に関する。   The present invention relates to a cooling structure for a heat exchanger for a vehicle.

近年、車両において、乗車空間の拡大によるエンジンルームの縮小化が進んでいる。これに加えて、自動車機能の多様化に伴ってエンジンルーム内の補機部品の増加が進んでいるので、エンジンルーム内の過密化が急激に進んでいる。このため、車両空調装置の凝縮器などの熱交換器がフロントバンパーの直後に設置されるものがある。   2. Description of the Related Art In recent years, in an automobile, an engine room has been reduced due to an increase in a boarding space. In addition to this, the increase in the number of auxiliary parts in the engine room is progressing along with the diversification of the functions of the automobile, and the engine room is rapidly becoming overcrowded. For this reason, some heat exchangers, such as a condenser of a vehicle air conditioner, are installed immediately after the front bumper.

この場合、フロントバンパーが熱交換器のコア部分を車両前側から覆うことになり、熱交換器のコア部分に外気が流れ難くなっている。このため、熱交換器の冷却性能の低下を招いていた。   In this case, the front bumper covers the core portion of the heat exchanger from the front side of the vehicle, and it is difficult for outside air to flow through the core portion of the heat exchanger. For this reason, the cooling performance of the heat exchanger is reduced.

本発明は、上記点に鑑み、熱交換器の冷却性能の低下を抑制するようにした車両用熱交換器の冷却構造を提供することを目的とする。   An object of this invention is to provide the cooling structure of the heat exchanger for vehicles which suppressed the fall of the cooling performance of the heat exchanger in view of the said point.

上記目的を達成するため、本発明では、車両前方に配置された熱交換器（２１、２３）を冷却する車両用熱交換器の冷却構造であって、熱交換器の車両前方に配置され、中空部（３２）を有するフロントバンパー（３０）に、中空部内に外気を導入する外気導入口（３５）と、中空部内に導入された外気を熱交換器に向けて吹き出す外気吹出口（３３ａ）と、を設けたことを特徴とする。   In order to achieve the above object, the present invention provides a cooling structure for a vehicle heat exchanger that cools a heat exchanger (21, 23) disposed in front of the vehicle, and is disposed in front of the vehicle in the heat exchanger, An outside air introduction port (35) for introducing outside air into the hollow portion into the front bumper (30) having the hollow portion (32), and an outside air outlet (33a) for blowing the outside air introduced into the hollow portion toward the heat exchanger Are provided.

したがって、外気をフロントバンパーを通して熱交換器に通風することができるので、熱交換器の冷却性能の低下を抑制することができる。なお、車両前方とは車両進行方向のことである。   Therefore, since the outside air can be ventilated to the heat exchanger through the front bumper, it is possible to suppress a decrease in the cooling performance of the heat exchanger. In addition, the vehicle front is a vehicle traveling direction.

なお、特許請求の範囲およびこの欄で記載した各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。   In addition, the code | symbol in the bracket | parenthesis of each means described in a claim and this column shows the correspondence with the specific means as described in embodiment mentioned later.

（第１実施形態）
図１に本発明に係る車両用熱交換器の冷却構造の第１実施形態を示す。図１は、車両のエンジンルーム前端部周辺を上側から視た図である。図中の矢印において“前”は車両前側（すなわち、車両進行方向）、“後”は車両後側、“右”は車両幅方向の右側、“左”は車両幅方向の左側を示している。 (First embodiment)
FIG. 1 shows a first embodiment of a cooling structure for a vehicle heat exchanger according to the present invention. FIG. 1 is a view of the vicinity of the front end of an engine room of a vehicle as viewed from above. In the arrows in the figure, “front” indicates the front side of the vehicle (that is, the vehicle traveling direction), “rear” indicates the rear side of the vehicle, “right” indicates the right side in the vehicle width direction, and “left” indicates the left side in the vehicle width direction. .

車両のエンジンルーム１０のうち車両前側には、クーリングユニット２０が配置されている。クーリングユニット２０は、凝縮器２１、ラジエータ２３、および電動送風機２５から構成されている。凝縮器２１は、圧縮機などとともに空調装置用冷凍サイクル装置を構成し、冷媒を冷却する熱交換器である。ラジエータ２３は、凝縮器２１の車両後側に配置されているものであって、走行用エンジンの冷却水を冷却する熱交換器である。電動送風機２５は、凝縮器２１およびラジエータ２３に対して車両後側に配置されて、車両前方から外気を凝縮器２１およびラジエータ２３に向けて引き込む。   A cooling unit 20 is disposed on the vehicle front side in the engine room 10 of the vehicle. The cooling unit 20 includes a condenser 21, a radiator 23, and an electric blower 25. The condenser 21 constitutes a refrigeration cycle apparatus for an air conditioner together with a compressor or the like, and is a heat exchanger that cools the refrigerant. The radiator 23 is disposed on the rear side of the condenser 21 and is a heat exchanger that cools the cooling water of the traveling engine. The electric blower 25 is disposed on the vehicle rear side with respect to the condenser 21 and the radiator 23, and draws outside air toward the condenser 21 and the radiator 23 from the front of the vehicle.

クーリングユニット２０の凝縮器２１の前方には、車両左右方向（すなわち、車両幅方向）に延びるようにフロントバンパー３０が配置されており、フロントバンパー３０は、中空部３２を有する角筒状に形成されている。フロントバンパー３０の左右両側端部には、図１に示すように、それぞれ、外気を中空部３２に導入する外気導入口としての開口部３５が設けられている。ここで、図２において、図１中のＡ−Ａ断面図に示すように、フロントバンパー３０のうち車両後側の側面３３には、外気吹出口として４つの開口部３３ａがそれぞれ設けられている。４つの開口部３３ａは、それぞれ、車両左右方向に並べられて、中空部３２に導入された外気をクーリングユニット２０に向けて吹き出す。   A front bumper 30 is disposed in front of the condenser 21 of the cooling unit 20 so as to extend in the left-right direction of the vehicle (that is, in the vehicle width direction). The front bumper 30 is formed in a rectangular tube shape having a hollow portion 32. Yes. As shown in FIG. 1, openings 35 serving as outside air inlets for introducing outside air into the hollow portion 32 are provided at both left and right end portions of the front bumper 30. Here, in FIG. 2, as shown in the AA cross-sectional view in FIG. 1, four openings 33 a are provided as outside air outlets on the side surface 33 on the vehicle rear side of the front bumper 30. The four openings 33 a are arranged in the left-right direction of the vehicle, and blow out the outside air introduced into the hollow portion 32 toward the cooling unit 20.

なお、フロントバンパー３０において、剛性を保持するために、４つの開口部３３ａの総面積をＳ、側面３３の面積をＴとすると、Ｓ≦０．８×Ｔとなるように設定してある。   In the front bumper 30, in order to maintain rigidity, S ≦ 0.8 × T is set, where S is the total area of the four openings 33 a and T is the area of the side surface 33.

また、フロントバンパー３０の車両前方には、フロントバンパー３０を車両前方から覆うように形成されるバンパーカバー５０が配置されている。バンパーカバー５０には、車両前方に向けて開口される２つの外気取入口４１がそれぞれ設けられており、各外気取入口４１は、それぞれ、フロントバンパー３０の開口部３５に繋がっている。   Further, a bumper cover 50 formed so as to cover the front bumper 30 from the front of the vehicle is disposed in front of the front bumper 30. The bumper cover 50 is provided with two outside air intakes 41 that are open toward the front of the vehicle, and each of the outside air intakes 41 is connected to the opening 35 of the front bumper 30.

以上のように構成される本実施形態において、電動送風機２５が駆動されると、電動送風機２５の回転によって図１中の矢印Ｙに示す如く、外気がバンパーカバー５０の車両前側からクーリングユニット２０側に吸い込まれる。すなわち、外気がバンパーカバー５０の各外気取入口４１内に流入し、この外気がフロントバンパー３０の各開口部３５から中空部３２内に流入する。そして、外気は、中空部３２を通して各開口部３３ａからクーリングユニット２０の凝縮器２１およびラジエータ２３に流れる。   In the present embodiment configured as described above, when the electric blower 25 is driven, the outside air flows from the front side of the bumper cover 50 to the cooling unit 20 side as indicated by the arrow Y in FIG. Sucked into. That is, outside air flows into each outside air intake 41 of the bumper cover 50, and this outside air flows into each hollow portion 32 from each opening 35 of the front bumper 30. Then, the outside air flows from the openings 33 a through the hollow portions 32 to the condenser 21 and the radiator 23 of the cooling unit 20.

したがって、フロントバンパー３０が凝縮器２１の車両前側に配置されていても、凝縮器２１およびラジエータ２３に外気を流すことができるので、凝縮器２１およびラジエータ２３の冷却性能の低下を抑制することができる。   Therefore, even if the front bumper 30 is disposed on the vehicle front side of the condenser 21, it is possible to allow outside air to flow through the condenser 21 and the radiator 23, and thus it is possible to suppress a decrease in the cooling performance of the condenser 21 and the radiator 23. .

なお、本実施形態では、本発明の車両用熱交換器の冷却構造を、フロントバンパー３０およびバンパーカバー５０を備える車両に適用した例について説明したが、これに限らず、バンパーカバー５０を備えていなく、フロントバンパー３０および各開口部３５が車両前方に露出している車両に適用してもよい。   In the present embodiment, the cooling structure for a vehicle heat exchanger according to the present invention is applied to a vehicle including the front bumper 30 and the bumper cover 50. However, the present invention is not limited thereto, and the bumper cover 50 is not provided. The present invention may be applied to a vehicle in which the front bumper 30 and each opening 35 are exposed to the front of the vehicle.

（第２実施形態）
上述の第１実施形態では、バンパーカバーに外気取入口を設けてフロントバンパー内に外気を取り入れた例について説明したが、これに代えて、本実施形態では、アンダーカバーに外気取入口を設けてフロントバンパー内に外気を取り入れるようにする。この場合の構成を図３、図４に示す。図３は車両の前端部を車両幅方向から視た図、図４は図３中矢印Ｇ方向からフロントバンパー３０およびクーリングユニット２０を視た図である。 (Second Embodiment)
In the first embodiment described above, an example has been described in which the outside air intake is provided in the bumper cover and the outside air is taken into the front bumper. Try to take outside air inside. The configuration in this case is shown in FIGS. 3 is a view of the front end portion of the vehicle as viewed from the vehicle width direction, and FIG. 4 is a view of the front bumper 30 and the cooling unit 20 as viewed from the direction of arrow G in FIG.

本実施形態において、アンダーカバー４３は、図３に示すように、クーリングユニット２０およびフロントバンパー３０の下側に配置されて、エンジンルーム１０を下側から覆うように形成されている。アンダーカバー４３には、図４に示すように、２つの外気取入口４１が車両左右方向に離して配置されている。右側の外気取入口４１とフロントバンパー３０の右側の開口部３５との間には、右側のダクト４０が接続され、左側の外気取入口４１とフロントバンパー３０の左側の開口部３５との間には、左側のダクト４０が接続されている。   In the present embodiment, as shown in FIG. 3, the under cover 43 is arranged below the cooling unit 20 and the front bumper 30 so as to cover the engine room 10 from below. As shown in FIG. 4, two outside air intake ports 41 are arranged in the under cover 43 so as to be separated from each other in the vehicle left-right direction. A right duct 40 is connected between the right outside air intake 41 and the right opening 35 of the front bumper 30, and between the left outside air intake 41 and the left opening 35 of the front bumper 30, The left duct 40 is connected.

したがって、電動送風機２５の回転に伴って、図４中の矢印Ｋに示す如く、車両下側から外気がアンダーカバー４３の各外気取入口４１内に流入し、この外気がダクト４０を通してフロントバンパー３０の中空部内に流入する。そして、外気は中空部内を通してフロントバンパー３０の開口部３３ａからクーリングユニット２０の凝縮器２１およびラジエータ２３に流れる。このため、上述の第１実施形態と同様に、凝縮器２１およびラジエータ２３の冷却性能の低下を抑制することができる。   Therefore, as the electric blower 25 rotates, outside air flows into the outside air intake 41 of the under cover 43 from the lower side of the vehicle as indicated by an arrow K in FIG. It flows into the hollow part. Then, the outside air flows from the opening 33a of the front bumper 30 to the condenser 21 and the radiator 23 of the cooling unit 20 through the hollow portion. For this reason, the fall of the cooling performance of the condenser 21 and the radiator 23 can be suppressed similarly to the above-mentioned 1st Embodiment.

（第３実施形態）
上述の第２実施形態では、アンダーカバーに外気取入口を設けてフロントバンパー内に外気を取り入れるようにした例について説明したが、これに代えて、本第３実施形態では、前輪用タイヤハウスに外気取入口を設けてフロントバンパー内に外気を取り入れるようにする。この場合の構成を図５、図６に示す。図５は車両の前端部を車両幅方向から視た図、図６は図５中矢印Ｈ方向からフロントバンパー３０およびクーリングユニット２０を視た図である。 (Third embodiment)
In the second embodiment described above, an example has been described in which the outside air intake is provided in the under cover so that the outside air is taken into the front bumper. Instead, in the third embodiment, the outside air is added to the front wheel tire house. An intake will be provided to allow outside air to enter the front bumper. The configuration in this case is shown in FIGS. 5 is a view of the front end portion of the vehicle as viewed from the vehicle width direction, and FIG. 6 is a view of the front bumper 30 and the cooling unit 20 as viewed from the direction of arrow H in FIG.

本実施形態において、２つの前輪用タイヤハウス４５には、図５（図中には１つの前輪用タイヤハウスのみを示す）に示すように、外気取入口４１がそれぞれ設けられている。   In the present embodiment, as shown in FIG. 5 (only one front wheel tire house is shown in the figure), the outside air intake ports 41 are respectively provided in the two front wheel tire houses 45.

右側の前輪用タイヤハウス４５の外気取入口４１は、右側のダクト４０を介して、図６に示すフロントバンパー３０の右側の開口部３５に接続され、左側の前輪用タイヤハウス４５の外気取入口４１は、左側のダクト４０を介して、図６に示すフロントバンパー３０の左側の開口部３５に接続されている。   The outside air intake 41 of the right front wheel tire house 45 is connected to the right opening 35 of the front bumper 30 shown in FIG. 6 via the right duct 40, and the outside air intake 41 of the left front wheel tire house 45 is shown. Is connected to the left opening 35 of the front bumper 30 shown in FIG.

したがって、本実施形態において、電動送風機２５が回転すると、図５および図６中の矢印Ｑに示す如く、前輪用タイヤハウス４５の内側の外気がクーリングユニット２０側に吸い込まれる。すなわち、左右両側の前輪用タイヤハウス４５の外気取入口４１内にそれぞれ外気が流入する。そして、左側の外気取入口４１に流入した外気が左側のダクト４０を通してフロントバンパー３０の中空部内に流入する。また、右側の外気取入口４１に流入した外気が右側のダクト４０を通してフロントバンパー３０の中空部内に流入する。その後、中空部内の外気は、各開口部３３ａからクーリングユニット２０の凝縮器２１およびラジエータ２３に流れる。このため、上述の第１、第２実施形態と同様に、凝縮器２１およびラジエータ２３の冷却性能の低下を抑制することができる。   Therefore, in the present embodiment, when the electric blower 25 rotates, the outside air inside the front wheel tire house 45 is sucked into the cooling unit 20 side as indicated by an arrow Q in FIGS. 5 and 6. That is, outside air flows into the outside air intake ports 41 of the front wheel tire houses 45 on both the left and right sides. Then, the outside air that has flowed into the left outside air intake 41 flows into the hollow portion of the front bumper 30 through the left duct 40. Further, the outside air that has flowed into the right outside air intake 41 flows into the hollow portion of the front bumper 30 through the right duct 40. Thereafter, the outside air in the hollow portion flows from each opening 33 a to the condenser 21 and the radiator 23 of the cooling unit 20. For this reason, the fall of the cooling performance of the condenser 21 and the radiator 23 can be suppressed similarly to the above-mentioned 1st, 2nd embodiment.

本発明の車両用熱交換器の冷却構造の第１実施形態を示す模式図である。It is a mimetic diagram showing a 1st embodiment of the cooling structure of the heat exchanger for vehicles of the present invention. 図１のフロントバンパーの側面の開口部を示す模式図である。It is a schematic diagram which shows the opening part of the side surface of the front bumper of FIG. 本発明の車両用熱交換器の冷却構造の第２実施形態を示す模式図である。It is a schematic diagram which shows 2nd Embodiment of the cooling structure of the heat exchanger for vehicles of this invention. 図３のフロントバンパー、ダクト、およびクーリングユニットを示す模式図である。It is a schematic diagram which shows the front bumper of FIG. 3, a duct, and a cooling unit. 本発明の車両用熱交換器の冷却構造の第２実施形態を示す模式図である。It is a schematic diagram which shows 2nd Embodiment of the cooling structure of the heat exchanger for vehicles of this invention. 図３のフロントバンパー、ダクト、およびクーリングユニットを示す模式図である。It is a schematic diagram which shows the front bumper of FIG. 3, a duct, and a cooling unit.

符号の説明Explanation of symbols

２０…クーリングユニット、２１…凝縮器、２３…ラジエータ、
２５…電動送風機、３０…フロントバンパー、３２…中空部、
３３…側面、３３ａ…開口部、３５…開口部、４１…外気取入口、
５０…バンパーカバー。 20 ... Cooling unit, 21 ... Condenser, 23 ... Radiator,
25 ... Electric blower, 30 ... Front bumper, 32 ... Hollow part,
33 ... Side, 33a ... Opening, 35 ... Opening, 41 ... Outside air intake,
50 ... Bumper cover.

Claims (4)

車両前方に配置された熱交換器（２１、２３）を冷却する車両用熱交換器の冷却構造であって、
前記熱交換器の車両前方に配置され、中空部（３２）を有するフロントバンパー（３０）に、
前記中空部内に外気を導入する外気導入口（３５）と、前記中空部内に導入された外気を前記熱交換器に向けて吹き出す外気吹出口（３３ａ）と、を設けたことを特徴とする車両用熱交換器の冷却構造。 A cooling structure for a vehicle heat exchanger for cooling a heat exchanger (21, 23) disposed in front of the vehicle,
A front bumper (30) disposed in front of the heat exchanger and having a hollow portion (32),
A vehicle comprising an outside air inlet (35) for introducing outside air into the hollow portion and an outside air outlet (33a) for blowing the outside air introduced into the hollow portion toward the heat exchanger. Cooling structure for heat exchangers. 前記フロントバンパーの車両前方に配置され、前記フロントバンパーを車両前方から覆うように形成されているバンパーカバー（５０）を備えており、
前記バンパーカバーは、前記外気を前記外気導入口に導入する外気取入口（４１）を備えていることを特徴とする請求項１に記載の車両用熱交換器の冷却構造。 A bumper cover (50) disposed in front of the front bumper and configured to cover the front bumper from the front of the vehicle;
The cooling structure for a vehicle heat exchanger according to claim 1, wherein the bumper cover includes an outside air inlet (41) for introducing the outside air into the outside air inlet. 前記熱交換器は、エンジンルーム内に配置されているものであって、
前記熱交換器の下側に配置されて、前記エンジンルームを下側から覆うように形成されて、かつ前記外気を取り入れる外気取入口（４１）を備えるアンダーカバー（４３）と、
前記アンダーカバーの前記外気取入口から取り入れられた外気を前記フロントバンパーの前記外気導入口に導入するダクト（４０）と、
を備えていることを特徴とする請求項１に記載の車両用熱交換器の冷却構造。 The heat exchanger is disposed in an engine room,
An under cover (43) disposed on the lower side of the heat exchanger, formed to cover the engine room from below, and having an outside air intake (41) for taking in the outside air;
A duct (40) for introducing outside air taken in from the outside air inlet of the undercover into the outside air inlet of the front bumper;
The vehicle heat exchanger cooling structure according to claim 1, further comprising: 車両の前輪を収納し、かつ外気を取り入れる外気取入口（４１）を備えるタイヤハウス（４５）と、
前記タイヤハウスの外気取入口から取り入れられた外気を前記フロントバンパーの外気導入口に導入するダクト（４０）と、
を備えていることを特徴とする請求項１に記載の車両用熱交換器の冷却構造。 A tire house (45) for storing the front wheels of the vehicle and having an outside air intake (41) for taking in outside air;
A duct (40) for introducing outside air taken in from the outside air intake of the tire house into the outside air inlet of the front bumper;
The vehicle heat exchanger cooling structure according to claim 1, further comprising:
JP2005354628A 2005-12-08 2005-12-08 Structure for cooling heat exchanger for vehicle Pending JP2007153260A (en)

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JP2008049735A (en) * 2006-08-22 2008-03-06 Mazda Motor Corp Vehicle body front structure
JP2012136083A (en) * 2010-12-24 2012-07-19 Yanmar Co Ltd Tractor
DE102014100792A1 (en) * 2013-11-19 2015-05-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft crossbeam

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JP2008049735A (en) * 2006-08-22 2008-03-06 Mazda Motor Corp Vehicle body front structure
JP2012136083A (en) * 2010-12-24 2012-07-19 Yanmar Co Ltd Tractor
DE102014100792A1 (en) * 2013-11-19 2015-05-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft crossbeam

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