JP2007076426A - Electronic equipment cooling system and vehicular air conditioner - Google Patents

Electronic equipment cooling system and vehicular air conditioner Download PDF

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JP2007076426A
JP2007076426A JP2005264283A JP2005264283A JP2007076426A JP 2007076426 A JP2007076426 A JP 2007076426A JP 2005264283 A JP2005264283 A JP 2005264283A JP 2005264283 A JP2005264283 A JP 2005264283A JP 2007076426 A JP2007076426 A JP 2007076426A
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heat
air
blower
vehicle
heat exchange
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Takeshi Suzuki
鈴木  剛
Kotaro Suda
耕太郎 須田
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Denso Corp
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Denso Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic equipment cooling system and a vehicular air conditioner for efficiently cooling on-vehicle electronic equipment E while being suitably used for cooling the on-vehicle electronic equipment such as a battery and an inverter arranged in an engine room. <P>SOLUTION: This vehicular electronic equipment cooling system has a heat absorbing side heat exchange part 17 absorbing heat generated by the on-vehicle electronic equipment E, a heat radiating side heat exchange part 18 radiating heat taken in by the heat absorbing side heat exchange part 17, and a circulating pump 19 circulating a heat exchange medium between the heat absorbing side heat exchange part 17 and the heat radiating side heat exchange part 18. The heat radiating side heat exchange part 18 is arranged between an air blower 14 and an evaporator 15 in the vehicular air conditioner 10 having the air blower 14 blowing air toward the inside of a cabin. The heat radiating side heat exchange part 18 radiates heat by exchanging the heat with the air sent from the air blower 14. This invention cools the on-vehicle electronic equipment E in the engine room by using the vehicular air conditioner 10 for air-conditioning the inside of the cabin. Thus, since the suction temperature into the cabin is lower in the temperature than the inside of the engine room, the on-vehicle electronic equipment E can be efficiently cooled. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車載電子機器を冷却する電子機器冷却装置および車両用空調装置に関するものであり、エンジンルーム内に配置されるバッテリーやインバータなどの車載電子機器の冷却に適用して好適である。   The present invention relates to an electronic device cooling apparatus and a vehicle air conditioner for cooling an in-vehicle electronic device, and is suitable for cooling an in-vehicle electronic device such as a battery or an inverter disposed in an engine room.

近年、車載用電子デバイスにおいては、より制御が複雑化してきており、冷却が必要な電子制御機器の数が増えてきている。また、ハイブリッド車の普及により、バッテリーやインバータなど、大能力の冷却が必要となってきている。これに対して従来は、独立系の冷却回路を形成したり、安価な方法としては図4に示すように、従来のエンジン冷却用のラジエータ50や車両用空調装置のコンデンサ(冷媒凝縮器)60などの熱交換器に付属させて冷却回路を構成したりしている。   In recent years, control in an in-vehicle electronic device has become more complicated, and the number of electronic control devices that require cooling has increased. In addition, with the widespread use of hybrid vehicles, it is necessary to cool batteries with high capacity such as batteries and inverters. On the other hand, conventionally, an independent cooling circuit is formed, or as an inexpensive method, as shown in FIG. 4, a conventional engine cooling radiator 50 or a vehicle air conditioner condenser (refrigerant condenser) 60 is used. It is attached to a heat exchanger such as a cooling circuit.

下記特許文献1には、このような冷却回路の制御方法が開示されている。なお、図4中の符号でEは車載電子機器、17は車載電子機器Eの発する熱を吸熱する吸熱側熱交換部、18は吸熱側熱交換部17で取り込んだ熱を放熱する放熱側熱交換部、19は吸熱側熱交換部17と放熱側熱交換部18との間で熱交換媒体を循環させる循環ポンプなどの媒体循環手段、51は熱交換器18・50・60に外気を通風させるラジエータファンである。
特開2004−48987号公報
Patent Document 1 below discloses such a cooling circuit control method. In FIG. 4, E is an in-vehicle electronic device, 17 is an endothermic heat exchanger that absorbs heat generated by the in-vehicle electronic device E, and 18 is an radiant heat that dissipates heat captured by the endothermic heat exchanger 17. An exchanging part 19 is a medium circulating means such as a circulation pump for circulating a heat exchanging medium between the heat absorption side heat exchanging part 17 and the heat radiation side heat exchanging part 18. It is a radiator fan.
JP 2004-48987 A

しかしながら、上記した従来技術では、放熱側熱交換部18がエンジンルーム内のため雰囲気温度が高く、充分な冷却を得るためには機器が大きくなったり、ファンモータの駆動頻度が高くなったりするという問題点がある。本発明は、上記従来技術の問題点に鑑みて成されたものであり、その目的は、車載電子機器を効率良く冷却できる電子機器冷却装置、およびその電子機器冷却装置を有効に活用する車両用空調装置を提供することにある。   However, in the above-described prior art, since the heat radiation side heat exchange section 18 is in the engine room, the ambient temperature is high, and in order to obtain sufficient cooling, the equipment becomes large or the fan motor is driven more frequently. There is a problem. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an electronic device cooling device that can efficiently cool an in-vehicle electronic device, and a vehicle that effectively uses the electronic device cooling device. It is to provide an air conditioner.

本発明は上記目的を達成するために、請求項1ないし請求項3に記載の技術的手段を採用する。すなわち、請求項1に記載の発明では、車載電子機器(E)の発する熱を吸熱する吸熱側熱交換部(17)と、
吸熱側熱交換部(17)で取り込んだ熱を放熱する放熱側熱交換部(18)と、
吸熱側熱交換部(17)と放熱側熱交換部(18)との間で熱交換媒体を循環させる媒体循環手段(19)とを備える車両用電子機器冷却装置において、
車室内へ向かって空気を送風する送風機(14)を有する車両用空調装置(10)内の送風機(14)と冷房用熱交換器(15)との間に放熱側熱交換部(18)を配置し、放熱側熱交換部(18)は送風機(14)から送られる空気と熱交換して放熱することを特徴特徴としている。
In order to achieve the above object, the present invention employs technical means described in claims 1 to 3. That is, in the invention according to claim 1, the heat absorption side heat exchange part (17) that absorbs heat generated by the in-vehicle electronic device (E),
A heat-dissipating side heat exchanging part (18) for dissipating the heat taken in by the heat-absorbing side heat exchanging part (17);
In the vehicular electronic device cooling apparatus, comprising a medium circulation means (19) for circulating a heat exchange medium between the heat absorption side heat exchange section (17) and the heat radiation side heat exchange section (18).
A heat radiation side heat exchanging portion (18) is provided between the air blower (14) and the cooling heat exchanger (15) in the vehicle air conditioner (10) having a blower (14) for blowing air toward the passenger compartment. It arrange | positions and the heat-radiation side heat exchange part (18) heat-exchanges with the air sent from an air blower (14), It is characterized by the heat radiation.

本発明はエンジンルーム内の車載電子機器(E)を、車室内を空調する車両用空調装置(10)を用いて冷却するものである。この請求項1に記載の発明によれば、車室内への吸い込み温度はエンジンルーム内よりも温度が低いため、車載電子機器(E)を効率良く冷却することができる。   The present invention cools an in-vehicle electronic device (E) in an engine room by using a vehicle air conditioner (10) that air-conditions a vehicle interior. According to the first aspect of the present invention, since the suction temperature into the vehicle compartment is lower than that in the engine room, the in-vehicle electronic device (E) can be efficiently cooled.

車両用空調装置(10)内に配置するためには、放熱側熱交換部(18)が放熱する温度や風速分布への影響、騒音の悪化などが懸念されるため、車室内空調に影響しない位置に配置する必要がある。そのために送風機(14)と冷房用熱交換器(15)との間に置き、放熱側熱交換部(18)で上昇させた温度を下流の冷房用熱交換器(15)で所望温度に冷やすことが可能である。   In order to arrange in the vehicle air conditioner (10), there is a concern about the influence of the heat radiation side heat exchange section (18) on the temperature and the wind speed distribution, noise deterioration, etc. Must be placed in position. For that purpose, it is placed between the blower (14) and the cooling heat exchanger (15), and the temperature raised by the heat radiation side heat exchange section (18) is cooled to the desired temperature by the downstream cooling heat exchanger (15). It is possible.

また、請求項2に記載の発明では、請求項1に記載の車両用電子機器冷却装置において、車両用空調装置(10)の停止時には、車両用空調装置(10)の吹出モードを全閉モードとして、送風機(14)を回転させることを特徴としている。この請求項2に記載の発明によれば、乗員が車両用空調装置(10)を停止させたときにも送風機(14)の低速回転により車載電子機器(E)の冷却作用を持続することができる。   According to a second aspect of the present invention, in the vehicular electronic device cooling apparatus according to the first aspect, when the vehicular air conditioner (10) is stopped, the blowing mode of the vehicular air conditioner (10) is set to the fully closed mode. As a feature, the blower (14) is rotated. According to the second aspect of the present invention, the cooling action of the vehicle-mounted electronic device (E) can be maintained by the low-speed rotation of the blower (14) even when the occupant stops the vehicle air conditioner (10). it can.

しかも、吹出モードを全閉モードとしているため、放熱側熱交換部(18)を冷却した風は車両用空調装置(10)のドレインポート(冷房用熱交換器(15)の凝縮水排出口)(47)から排出されることとなるため、乗員に向かって不快な空気を吹き出すことがない。また、送風機(14)は低速回転としているため、送風騒音や消費電力の問題も発生しない。このため、車両用空調装置(10)停止時に送風機(14)を作動させても、不都合は生じない。   And since the blowing mode is made into the fully closed mode, the wind which cooled the heat-radiation side heat exchange part (18) is the drain port (condensate discharge port of the heat exchanger for cooling (15)) of a vehicle air conditioner (10) Since (47) is discharged, unpleasant air is not blown out toward the passenger. Further, since the blower (14) is rotated at a low speed, the problem of blowing noise and power consumption does not occur. For this reason, even if the blower (14) is operated when the vehicle air conditioner (10) is stopped, no inconvenience occurs.

また、請求項3に記載の発明では、一端に吸込口(13a、13b)、他端に吹出口(35〜37)を有して空気通路を成す空調ケース(12a)と、
吸込口(13a、13b)の内部側に配設されて吸込口(13a、13b)から吹出口(35〜37)を介して車室内へと向かう空気流を発生させる送風機(14)と、
送風機(14)の空気流れ下流側に配置されて送風機(14)から送風される空気を冷却する冷房用熱交換器(15)とを備え、
送風機(14)から冷房用熱交換器(15)へと向かう空気流れ方向(A)と冷房用熱交換器(15)の通風方向(B)とが略直交する車両用空調装置において、
送風機(14)と冷房用熱交換器(15)との間の空気通路中に請求項1に記載の放熱側熱交換部(18)を配置するとともに、
放熱側熱交換部(18)の通風方向(C)を、空気流れ方向(A)よりも冷房用熱交換器(15)の空気流入面中央部に向くように傾斜させたことを特徴としている。
Further, in the invention according to claim 3, the air conditioning case (12a) which has an inlet (13a, 13b) at one end and an air outlet (35-37) at the other end to form an air passage;
A blower (14) disposed on the inner side of the suction port (13a, 13b) and generating an air flow from the suction port (13a, 13b) to the vehicle interior via the blowout port (35-37);
A cooling heat exchanger (15) that is disposed on the downstream side of the air flow of the blower (14) and cools the air blown from the blower (14),
In the vehicle air conditioner in which the air flow direction (A) from the blower (14) to the cooling heat exchanger (15) and the ventilation direction (B) of the cooling heat exchanger (15) are substantially orthogonal to each other,
While arrange | positioning the thermal radiation side heat exchange part (18) of Claim 1 in the air path between an air blower (14) and a cooling heat exchanger (15),
The ventilation direction (C) of the heat radiating side heat exchanging section (18) is inclined so as to face the center of the air inflow surface of the cooling heat exchanger (15) rather than the air flow direction (A). .

現在、車両用空調装置(10)は、空調装置本体の空調ユニット部(12)を車両左右方向の略中央に配置し、この空調ユニット部(12)に対して送風機(14)の入った送風機(ブロワ)ユニット部(11)を助手席側にオフセットさせて配置したブロワオフセットセンタ置きというレイアウトが主流となっている。このレイアウトにおいては、送風機(14)から冷房用熱交換器(15)へと向かう空気流れ方向(A)と、冷房用熱交換器(15)の通風方向(B)とが略直交することとなり、送風機(14)からの風を略90度曲げてやる必要がある。   Currently, an air conditioner (10) for a vehicle has an air conditioner unit (12) of an air conditioner main body disposed substantially at the center in the left-right direction of the vehicle, and a blower including a blower (14) with respect to the air conditioner unit (12). A layout called a blower offset center placement in which the (blower) unit section (11) is offset to the passenger seat side is the mainstream. In this layout, the air flow direction (A) from the blower (14) to the cooling heat exchanger (15) and the ventilation direction (B) of the cooling heat exchanger (15) are substantially orthogonal. It is necessary to bend the wind from the blower (14) by approximately 90 degrees.

従来は、空調ケース(12a)を絞るなどして風速を均一にしているが、この請求項3に記載の発明によれば、放熱側熱交換部(18)の通風方向(C)を、空気流れ方向(A)よりも冷房用熱交換器(15)の空気流入面中央部に向くように傾斜させることにより、風をスムーズに冷房用熱交換器(15)に配風することが可能である。また、整流作用も働き、騒音を低下させる効果も得られる。   Conventionally, the air speed is made uniform by narrowing the air conditioning case (12a). However, according to the invention described in claim 3, the air flow direction (C) of the heat radiating side heat exchanging portion (18) is set to air. It is possible to smoothly distribute the wind to the cooling heat exchanger (15) by inclining it toward the center of the air inflow surface of the cooling heat exchanger (15) rather than the flow direction (A). is there. In addition, the rectifying action also works, and the effect of reducing noise can be obtained.

また、請求項4に記載の発明では、請求項3に記載の車両用空調装置において、車室内を暖房する場合、放熱側熱交換部(18)からの放熱を補助加熱として利用したことを特徴としている。この請求項4に記載の発明によれば、低熱源車などにおいて車両用電子機器冷却装置の放熱側熱交換部(18)を、暖房時の補助加熱として用いることができる。ちなみに、上記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一例である。   Further, in the invention according to claim 4, in the vehicle air conditioner according to claim 3, when the vehicle interior is heated, the heat radiation from the heat radiation side heat exchange section (18) is used as auxiliary heating. It is said. According to the fourth aspect of the present invention, in the low heat source vehicle or the like, the heat radiation side heat exchange part (18) of the vehicular electronic device cooling apparatus can be used as auxiliary heating during heating. Incidentally, the reference numerals in parentheses of the above means are examples showing the correspondence with the specific means described in the embodiments described later.

以下、本発明の実施の形態について添付した図面を用いて詳細に説明する。図1は、本発明の一実施形態における電子機器冷却装置の模式図と、車両用空調装置10の平面断面図である。また、図2は図1の車両用空調装置10の構造を説明する断面模式図である。車両用空調装置10の室内ユニットは、図示しない車両計器盤の内側に配置される送風機ユニット部11と空調ユニット部12とにより構成される。   Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic diagram of an electronic device cooling device and a plan sectional view of a vehicle air conditioner 10 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view illustrating the structure of the vehicle air conditioner 10 of FIG. The indoor unit of the vehicle air conditioner 10 includes a blower unit unit 11 and an air conditioning unit unit 12 which are arranged inside a vehicle instrument panel (not shown).

図1は、右ハンドル車の場合を例示しており、送風機ユニット部11は車両左側の助手席側に配置され、空調ユニット部12は車両左右方向の略中央部に配置されている。また、ダッシュパネルDPを仕切りとして、送風機ユニット部11と空調ユニット部12とは車室内側に配置され、本発明で言う車載電子機器Eはエンジンルーム内に配置されている。なお、図1中の矢印方向は、車両搭載状態での前後左右方向を示している。   FIG. 1 illustrates the case of a right-hand drive vehicle. The blower unit unit 11 is disposed on the passenger seat side on the left side of the vehicle, and the air conditioning unit unit 12 is disposed in a substantially central portion in the left-right direction of the vehicle. Further, with the dash panel DP as a partition, the blower unit 11 and the air conditioning unit 12 are arranged on the vehicle interior side, and the in-vehicle electronic device E referred to in the present invention is arranged in the engine room. In addition, the arrow direction in FIG. 1 has shown the front-back, left-right direction in the vehicle mounting state.

ここで、送風機ユニット部11および空調ユニット部12は周知の構成であるので、その概要を簡単に説明する。送風機ユニット部11は、図2に示すように、上部に内気(車室内空気)と外気(車室外空気)とを切り換え導入する内外気切り換え箱13を配置し、この内外気切り換え箱13の下部に送風機14を配置した構成になっている。   Here, since the blower unit unit 11 and the air conditioning unit unit 12 have a known configuration, an outline thereof will be briefly described. As shown in FIG. 2, the blower unit 11 has an inside / outside air switching box 13 for switching between and introducing inside air (vehicle compartment air) and outside air (vehicle compartment outside air) at the top, and a lower portion of the inside / outside air switching box 13. It is the structure which has arrange | positioned the air blower 14 to.

内外気切り換え箱13には、吸込口としての外気吸込口13aと内気吸込口13bが形成され、その外気吸込口13aと内気吸込口13bとを切り換え開閉する内外気切り換えドア13cが回動可能に配置されている。送風機14は、内外気切り換え箱13に導入された空気を吸入口14aから吸入して送風する遠心多翼式ファン14bと、ファン駆動用モータ14cと、スクロールケーシング部14dとを有している。   The inside / outside air switching box 13 is formed with an outside air suction port 13a and an inside air suction port 13b as suction ports, and an inside / outside air switching door 13c for switching between the outside air suction port 13a and the inside air suction port 13b can be rotated. Has been placed. The blower 14 includes a centrifugal multiblade fan 14b that sucks and blows air introduced into the inside / outside air switching box 13 from the suction port 14a, a fan driving motor 14c, and a scroll casing portion 14d.

空調ユニット部12は、送風機ユニット部11からの送風空気を温度調整して車室内へ吹き出すもので、スクロールケーシング部14dからの空気が流入する樹脂製ケース12aを有している。この樹脂製ケース12a内に、送風空気を冷却する冷房用熱交換器としてのエバポレータ(冷媒蒸発器)15、送風空気を加熱する暖房用熱交換器としての温水式ヒータコア16を内蔵している。   The air conditioning unit 12 adjusts the temperature of the blown air from the blower unit 11 and blows it out into the passenger compartment, and has a resin case 12a into which the air from the scroll casing portion 14d flows. In the resin case 12a, an evaporator (refrigerant evaporator) 15 as a cooling heat exchanger for cooling the blown air and a hot water heater core 16 as a heating heat exchanger for heating the blown air are incorporated.

エバポレータ15の下流側にはエアミックスドア33が回動可能に配置され、温水式ヒータコア16を通過する温風と、バイパス通路34を通過する冷風との風量割合をエアミックスドア33により調整して車室内への吹出温度を制御する。   An air mix door 33 is rotatably disposed downstream of the evaporator 15, and the air volume ratio between the hot air passing through the hot water heater core 16 and the cool air passing through the bypass passage 34 is adjusted by the air mix door 33. Controls the temperature in the cabin.

この温風と冷風は混合されて所望の温度となった後に、吹出口としてのデフロスタ開口部35、フェイス開口部36およびフット開口部37を通して車室内の各部へ吹き出す。これらの各開口部35〜37は吹出モードドアとしてのデフロスタドア38、フェイスドア39およびフットドア40によって開閉される。   The warm air and the cool air are mixed to reach a desired temperature, and then blown out through the defroster opening 35, the face opening 36, and the foot opening 37 serving as outlets to various parts in the vehicle interior. Each of these openings 35 to 37 is opened and closed by a defroster door 38, a face door 39, and a foot door 40 as blowing mode doors.

次に、車両用電子機器冷却装置の構成について説明する。車両用電子機器冷却装置は、バッテリーやインバータなどの車載電子機器Eに接触して発する熱を吸熱する吸熱側熱交換部17と、吸熱側熱交換部17で取り込んだ熱を放熱する放熱側熱交換部18と、吸熱側熱交換部17と放熱側熱交換部18との間で熱交換媒体を循環させる媒体循環手段としての循環ポンプ19)とからなっている。   Next, the configuration of the vehicular electronic device cooling apparatus will be described. The vehicular electronic device cooling device includes a heat absorption side heat exchanging portion 17 that absorbs heat generated by contact with an in-vehicle electronic device E such as a battery or an inverter, and a heat radiation side heat that dissipates the heat captured by the heat absorption side heat exchanging portion 17 It comprises an exchanging part 18 and a circulation pump 19) as a medium circulating means for circulating a heat exchange medium between the heat absorption side heat exchange part 17 and the heat radiation side heat exchange part 18.

そして、本実施形態では車載電子機器E、吸熱側熱交換部17および循環ポンプ19はエンジンルーム内に配置し、放熱側熱交換部18は車室内の室内ユニットの送風機14とエバポレータ15との間の空気通路中に配置しており、放熱側熱交換部18は送風機14から送られる空気と熱交換して車載電子機器Eから吸熱した熱を放熱するようにしている。   In this embodiment, the in-vehicle electronic device E, the heat absorption side heat exchange unit 17 and the circulation pump 19 are disposed in the engine room, and the heat radiation side heat exchange unit 18 is provided between the blower 14 and the evaporator 15 of the indoor unit in the vehicle interior. The heat radiating side heat exchanging portion 18 exchanges heat with the air sent from the blower 14 so as to dissipate the heat absorbed from the in-vehicle electronic device E.

なお、図1に示すように、送風機14からエバポレータ15へと向かう空気流れ方向Aと、エバポレータ15の通風方向Bとは略直交となっているが、空気通路中に設けた放熱側熱交換部18の通風方向Cは、送風機14からエバポレータ15へと向かう空気流れ方向Aよりもエバポレータ15の空気流入面中央部に向くように傾斜させて配置している。   As shown in FIG. 1, the air flow direction A from the blower 14 to the evaporator 15 and the air flow direction B of the evaporator 15 are substantially orthogonal, but the heat radiation side heat exchange section provided in the air passage The air flow direction C of 18 is arranged so as to be inclined toward the center of the air inflow surface of the evaporator 15 with respect to the air flow direction A from the blower 14 toward the evaporator 15.

図3は、図1の車両用空調装置10の電気制御ブロック図である。空調用電子制御装置(ECU)41は図示しない冷媒圧縮機、送風機14の駆動用モータ14c、内外気切り換えドア13c・エアミックスドア33それぞれの図示しない駆動用モータ、吹出モードドア38〜40の駆動用モータ42などの空調用アクチュエータなどを制御するものである。   FIG. 3 is an electric control block diagram of the vehicle air conditioner 10 of FIG. The air-conditioning electronic control unit (ECU) 41 includes a refrigerant compressor (not shown), a driving motor 14c for the blower 14, driving motors (not shown) for the inside / outside air switching door 13c and the air mix door 33, and driving of the blow-out mode doors 38 to 40. It controls air conditioning actuators such as the motor 42 for the motor.

ECU41には、空調制御のために、内気温Tr、外気温Tam、日射量Ts、エバポレータ温度TE、温水温度Twなどを検出する周知のセンサ群43から検出信号が入力される。また、車室内計器盤近傍に設置される空調操作パネル44には乗員により手動操作される操作スイッチ群45が備えられ、この操作スイッチ群45の操作信号も空調用電子制御装置41に入力される。   For the air conditioning control, the ECU 41 receives detection signals from a known sensor group 43 that detects the inside air temperature Tr, the outside air temperature Tam, the solar radiation amount Ts, the evaporator temperature TE, the hot water temperature Tw, and the like. The air conditioning operation panel 44 installed in the vicinity of the vehicle interior instrument panel is provided with an operation switch group 45 that is manually operated by a passenger, and an operation signal of the operation switch group 45 is also input to the air conditioning electronic control device 41. .

この操作スイッチ群45としては、風量切り換え信号を発生する送風機スイッチ45aが設けられ、その他に、温度設定信号TsEtを発生する温度設定スイッチ、吹出モード信号を発生する吹出モードスイッチ、内外気切り換え信号を発生する内外気切り換えスイッチ、圧縮機オンオフ信号を発生するエアコンスイッチ等が設けられている。また、車載電子機器Eの作動状況も信号46にてECU41に入力される。   The operation switch group 45 is provided with a blower switch 45a that generates an air volume switching signal. In addition, a temperature setting switch that generates a temperature setting signal TsEt, a blowing mode switch that generates a blowing mode signal, and an inside / outside air switching signal. There are provided an inside / outside air switching switch for generating, an air conditioner switch for generating a compressor on / off signal, and the like. The operating status of the on-vehicle electronic device E is also input to the ECU 41 by a signal 46.

本実施形態では、空調操作パネル44の送風機スイッチ45a、もしくは図示しないオートスイッチが投入され、送風機14が作動しているときは、送風機14の送風空気によって下流側に配置した放熱側熱交換部18内の熱交換媒体を冷却する。放熱側熱交換部18で冷却された熱交換媒体は循環ポンプ19で吸熱側熱交換部17に循環され、吸熱側熱交換部17に接触している車載電子機器Eを冷却する。   In the present embodiment, when the air blower switch 45a of the air conditioning operation panel 44 or an auto switch (not shown) is turned on and the air blower 14 is operating, the heat radiation side heat exchanging portion 18 arranged on the downstream side by the air blown from the air blower 14 is used. The heat exchange medium inside is cooled. The heat exchange medium cooled by the heat radiation side heat exchange unit 18 is circulated to the heat absorption side heat exchange unit 17 by the circulation pump 19 to cool the vehicle-mounted electronic device E in contact with the heat absorption side heat exchange unit 17.

なお、放熱側熱交換部18で上昇させた温度は、冷房時ならば下流のエバポレータ15で所望温度に冷やして吹き出される。また、車室内を暖房する場合ならば、放熱側熱交換部18からの放熱を補助加熱として利用することができる。これは、低熱源車などにおいては放熱側熱交換部18を、暖房時の補助加熱として用いることができることとなる。   It should be noted that the temperature raised by the heat radiation side heat exchanging section 18 is cooled to a desired temperature by the downstream evaporator 15 and blown out during cooling. Further, if the vehicle interior is heated, the heat radiation from the heat radiation side heat exchange unit 18 can be used as auxiliary heating. This means that the heat radiation side heat exchanging portion 18 can be used as auxiliary heating during heating in a low heat source vehicle or the like.

一方、車両用空調装置10が停止されている時であっても、車載電子機器Eの作動信号46が入力され、車載電子機器Eが作動しているときは、この車載電子機器Eの作動状態をECU41によって判定し、ECU41から送風機駆動用モータ14cの作動指令を出力し、送風機14を強制的に作動させる。   On the other hand, even when the vehicle air conditioner 10 is stopped, when the operation signal 46 of the in-vehicle electronic device E is input and the in-vehicle electronic device E is operating, the operating state of the in-vehicle electronic device E Is determined by the ECU 41, and an operation command for the blower driving motor 14c is output from the ECU 41 to forcibly operate the blower 14.

これと同時に、ECU41は、吹出モードドア38〜40の駆動用モータ42に作動指令を出力して、吹出モードドア38〜40により全開口部35〜37を図2のように全て閉塞する全閉モードとする。この全閉モードの採用により、車室内への空気吹出という弊害は生じない。   At the same time, the ECU 41 outputs an operation command to the driving motor 42 of the blow-out mode doors 38 to 40, and fully closes all the openings 35 to 37 by the blow-out mode doors 38 to 40 as shown in FIG. Mode. By adopting this fully closed mode, the harmful effect of air blowing into the vehicle compartment does not occur.

そして、送風機14の作動による送風空気で放熱側熱交換部18を冷却した後、その空気はエバポレータ15下方のドレインポート47から車室外へ吹き出される。これにより、車両用空調装置10の停止状態でも車両用電子機器冷却装置の放熱側熱交換部18、つまりは車載電子機器Eを送風空気にて冷却できる。   And after cooling the thermal radiation side heat exchange part 18 with the ventilation air by the action | operation of the air blower 14, the air is blown out of the vehicle interior from the drain port 47 below the evaporator 15. FIG. Thereby, even if the vehicle air conditioner 10 is in a stopped state, the heat-radiating side heat exchanging portion 18 of the vehicular electronic device cooling apparatus, that is, the on-vehicle electronic device E can be cooled by the blown air.

なお、車両用空調装置10の停止状態における送風機14の作動は、車載電子機器Eを冷却するための作動であり、車室内の空調を目的とした作動ではないため、送風機14を極めて低回転で作動させれば良い。従って、送風機14を空調作動時の低速回転(Lo)よりも更に低い低速回転数(ウルトラLo)で作動させれば良い。   Note that the operation of the blower 14 in the stop state of the vehicle air conditioner 10 is an operation for cooling the vehicle-mounted electronic device E, and is not an operation intended for air conditioning in the vehicle interior. It only has to be activated. Therefore, the blower 14 may be operated at a low speed (ultra Lo) that is lower than the low speed (Lo) during the air conditioning operation.

次に、本実施形態での特徴と、その効果について述べる。まず、車載電子機器Eの発する熱を吸熱する吸熱側熱交換部17と、吸熱側熱交換部17で取り込んだ熱を放熱する放熱側熱交換部18と、吸熱側熱交換部17と放熱側熱交換部18との間で熱交換媒体を循環させる循環ポンプ19とを備える車両用電子機器冷却装置において、
車室内へ向かって空気を送風する送風機14を有する車両用空調装置10内の送風機14とエバポレータ15との間に放熱側熱交換部18を配置し、放熱側熱交換部18は送風機14から送られる空気と熱交換して放熱するようにしている。
Next, features and effects of this embodiment will be described. First, a heat absorption side heat exchange unit 17 that absorbs heat generated by the in-vehicle electronic device E, a heat radiation side heat exchange unit 18 that radiates heat taken in by the heat absorption side heat exchange unit 17, a heat absorption side heat exchange unit 17 and a heat radiation side In the vehicular electronic device cooling apparatus including the circulation pump 19 that circulates the heat exchange medium with the heat exchange unit 18,
A heat dissipating side heat exchanging unit 18 is disposed between the air blower 14 and the evaporator 15 in the vehicle air conditioner 10 having a fan 14 that blows air toward the passenger compartment. Heat is exchanged with the generated air to dissipate heat.

本発明はエンジンルーム内の車載電子機器Eを、車室内を空調する車両用空調装置10を用いて冷却するものである。これによれば、車室内への吸い込み温度はエンジンルーム内よりも温度が低いため、車載電子機器Eを効率良く冷却することができる。   The present invention cools an in-vehicle electronic device E in an engine room using a vehicle air conditioner 10 that air-conditions a vehicle interior. According to this, since the suction temperature into the vehicle compartment is lower than that in the engine compartment, the in-vehicle electronic device E can be efficiently cooled.

車両用空調装置10内に配置するためには、放熱側熱交換部18が放熱する温度や風速分布への影響、騒音の悪化などが懸念されるため、車室内空調に影響しない位置に配置する必要がある。そのために送風機14とエバポレータ15との間に置き、放熱側熱交換部18で上昇させた温度を下流のエバポレータ15で所望温度に冷やすことが可能である。   In order to arrange in the vehicle air conditioner 10, there is a concern about the influence of the temperature and wind speed distribution of the heat radiating side heat exchanging section 18 on heat distribution and the deterioration of noise. There is a need. For this purpose, it is possible to place the temperature between the blower 14 and the evaporator 15 and cool the temperature raised by the heat radiation side heat exchange section 18 to a desired temperature by the downstream evaporator 15.

また、車両用空調装置10の停止時には、車両用空調装置10の吹出モードを全閉モードとして、送風機14を低速回転させるようにしている。これによれば、乗員が車両用空調装置10を停止させたときにも送風機14の回転により車載電子機器Eの冷却作用を持続することができる。   Further, when the vehicle air conditioner 10 is stopped, the blower 14 is rotated at a low speed by setting the blowing mode of the vehicle air conditioner 10 to the fully closed mode. According to this, even when the occupant stops the vehicle air conditioner 10, the cooling action of the in-vehicle electronic device E can be continued by the rotation of the blower 14.

しかも、吹出モードを全閉モードとしているため、放熱側熱交換部18を冷却した風は車両用空調装置10のドレインポート47から排出されることとなるため、乗員に向かって不快な空気を吹き出すことがない。また、送風機14は低速回転としているため、送風騒音や消費電力の問題も発生しない。このため、車両用空調装置10停止時に送風機14を作動させても、不都合は生じない。   Moreover, since the blowing mode is set to the fully closed mode, the air that has cooled the heat-radiating side heat exchanging portion 18 is discharged from the drain port 47 of the vehicle air conditioner 10, and therefore unpleasant air is blown out toward the passenger. There is nothing. Further, since the blower 14 is rotated at a low speed, the problem of blowing noise and power consumption does not occur. For this reason, even if the blower 14 is operated when the vehicle air conditioner 10 is stopped, no inconvenience occurs.

また、一端に吸込口13a・13b、他端に吹出口35〜37を有して空気通路を成す空調ケース12aと、吸込口13a・13bの内部側に配設されて吸込口13a・13bから吹出口35〜37を介して車室内へと向かう空気流を発生させる送風機14と、送風機14の空気流れ下流側に配置されて送風機14から送風される空気を冷却するエバポレータ15とを備え、送風機14からエバポレータ15へと向かう空気流れ方向Aとエバポレータ15の通風方向Bとが略直交する車両用空調装置において、
送風機14とエバポレータ15との間の空気通路中に上記の放熱側熱交換部18を配置するとともに、放熱側熱交換部18の通風方向Cを、空気流れ方向Aよりもエバポレータ15の空気流入面中央部に向くように傾斜させている。
In addition, the air-conditioning case 12a that has the air inlets 13a and 13b at one end and the air outlets 35 to 37 at the other end to form an air passage, and the air inlet case 13a and 13b are disposed on the inner side of the air inlets 13a and 13b. The blower 14 includes an air blower 14 that generates an air flow toward the vehicle interior via the air outlets 35 to 37, and an evaporator 15 that is disposed on the downstream side of the air flow of the blower 14 and cools the air blown from the blower 14. In the vehicle air conditioner in which the air flow direction A from 14 to the evaporator 15 and the ventilation direction B of the evaporator 15 are substantially orthogonal to each other,
The heat dissipation side heat exchange unit 18 is disposed in the air passage between the blower 14 and the evaporator 15, and the air flow direction C of the heat dissipation side heat exchange unit 18 is set to the air inflow surface of the evaporator 15 rather than the air flow direction A. It is inclined to face the center.

現在、車両用空調装置10は、空調装置本体の空調ユニット部12を車両左右方向の略中央に配置し、この空調ユニット部12に対して送風機14の入った送風機(ブロワ)ユニット部11を助手席側にオフセットさせて配置したブロワオフセットセンタ置きというレイアウトが主流となっている。このレイアウトにおいては、送風機14からエバポレータ15へと向かう空気流れ方向Aと、エバポレータ15の通風方向Bとが略直交することとなり、送風機14からの風を略90度曲げてやる必要がある。   Currently, the vehicle air conditioner 10 has an air conditioner unit 12 of the air conditioner main body disposed substantially in the center in the left-right direction of the vehicle, and the air blower unit 11 containing the blower 14 is an assistant to the air conditioner unit 12. The mainstream layout is a blower offset center placement that is offset from the seat side. In this layout, the air flow direction A from the blower 14 toward the evaporator 15 and the ventilation direction B of the evaporator 15 are substantially orthogonal, and it is necessary to bend the wind from the blower 14 by approximately 90 degrees.

従来は、空調ケース12aを絞るなどして風速を均一にしているが、これによれば、放熱側熱交換部18の通風方向Cを、空気流れ方向Aよりもエバポレータ15の空気流入面中央部に向くように傾斜させることにより、風をスムーズにエバポレータ15に配風することが可能である。また、整流作用も働き、騒音を低下させる効果も得られる。   Conventionally, the air speed is made uniform by narrowing the air-conditioning case 12a, but according to this, the airflow direction C of the heat-dissipation side heat exchanging portion 18 is more central in the air inflow surface of the evaporator 15 than in the air flow direction A. It is possible to distribute the wind smoothly to the evaporator 15 by inclining it so as to face. In addition, the rectifying action also works, and the effect of reducing noise can be obtained.

また、車室内を暖房する場合、放熱側熱交換部18からの放熱を補助加熱として利用している。これによれば、低熱源車などにおいて車両用電子機器冷却装置の放熱側熱交換部18を、暖房時の補助加熱として用いることができる。   Moreover, when heating the vehicle interior, the heat radiation from the heat radiation side heat exchange unit 18 is used as auxiliary heating. According to this, in the low heat source vehicle etc., the heat radiation side heat exchange part 18 of the vehicular electronic device cooling apparatus can be used as auxiliary heating at the time of heating.

(その他の実施形態)
上述の実施形態では、車両用空調装置10の停止時に吹出モードとして全閉モードを選択して送風機14を低速回転させているが、吹出モードとして全閉モードの代わりにデフロスタモードを選択するようにしても良い。すなわち、デフロスタモードでは、吹出モードドア39・40によりフェイス開口部36およびフット開口部37を閉塞し、吹出モードドア38によってデフロスタ開口部35を開放する。
(Other embodiments)
In the above-described embodiment, when the vehicle air conditioner 10 is stopped, the fully closed mode is selected as the blowing mode and the blower 14 is rotated at a low speed. However, the defroster mode is selected as the blowing mode instead of the fully closed mode. May be. That is, in the defroster mode, the face opening 36 and the foot opening 37 are closed by the blowing mode doors 39 and 40, and the defroster opening 35 is opened by the blowing mode door 38.

これにより、車室内へはデフロスタ開口部35を通して車両全面ガラスの内側へ少量の空気が吹き出すだけで、乗員側へ空気が吹き出すことはない。そのため、車両用空調装置10の停止時における車室内への空気吹出の弊害は生じない。   Thus, only a small amount of air is blown into the vehicle interior through the defroster opening 35 to the inside of the entire vehicle glass, and no air is blown out to the passenger. Therefore, the adverse effect of air blowing into the vehicle compartment when the vehicle air conditioner 10 is stopped does not occur.

本発明の一実施形態における電子機器冷却装置の模式図と、車両用空調装置10の平面断面図である。It is the schematic diagram of the electronic device cooling device in one Embodiment of this invention, and the plane sectional drawing of the air conditioner 10 for vehicles. 図1の車両用空調装置10の構造を説明する断面模式図である。It is a cross-sectional schematic diagram explaining the structure of the vehicle air conditioner 10 of FIG. 図1の車両用空調装置10の電気制御ブロック図である。It is an electric control block diagram of the vehicle air conditioner 10 of FIG. 従来の電子機器冷却装置の一例を示す車両前部の部分模式図である。It is a partial schematic diagram of a vehicle front portion showing an example of a conventional electronic device cooling apparatus.

符号の説明Explanation of symbols

10…車両用空調装置
12a…空調ケース
13a…外気吸込口(吸込口)
13b…内気吸込口(吸込口)
14…送風機
15…エバポレータ(冷房用熱交換器)
17…吸熱側熱交換部
18…放熱側熱交換部
19…循環ポンプ(媒体循環手段)
35…デフロスタ開口部(吹出口)
36…フェイス開口部(吹出口)
37…フット開口部(吹出口)
A…空気流れ方向
B、C…通風方向
E…車載電子機器
DESCRIPTION OF SYMBOLS 10 ... Air conditioner for vehicles 12a ... Air-conditioning case 13a ... Outside air inlet (suction inlet)
13b ... Inside air suction port (suction port)
14 ... Blower 15 ... Evaporator (cooling heat exchanger)
17 ... Heat absorption side heat exchange part 18 ... Heat radiation side heat exchange part 19 ... Circulation pump (medium circulation means)
35 ... Defroster opening (air outlet)
36 ... Face opening (air outlet)
37 ... Foot opening (air outlet)
A ... Air flow direction B, C ... Ventilation direction E ... In-vehicle electronic equipment

Claims (4)

車載電子機器(E)の発する熱を吸熱する吸熱側熱交換部(17)と、
前記吸熱側熱交換部(17)で取り込んだ熱を放熱する放熱側熱交換部(18)と、
前記吸熱側熱交換部(17)と前記放熱側熱交換部(18)との間で熱交換媒体を循環させる媒体循環手段(19)とを備える車両用電子機器冷却装置において、
車室内へ向かって空気を送風する送風機(14)を有する車両用空調装置(10)内の前記送風機(14)と冷房用熱交換器(15)との間に前記放熱側熱交換部(18)を配置し、前記放熱側熱交換部(18)は前記送風機(14)から送られる空気と熱交換して放熱することを特徴とする車両用電子機器冷却装置。
An endothermic heat exchanger (17) that absorbs heat generated by the in-vehicle electronic device (E);
A heat radiating side heat exchanging part (18) for dissipating the heat taken in by the heat absorbing side heat exchanging part (17);
In the vehicular electronic device cooling apparatus comprising medium circulation means (19) for circulating a heat exchange medium between the heat absorption side heat exchange part (17) and the heat radiation side heat exchange part (18),
The heat radiation side heat exchange section (18) is provided between the blower (14) and the cooling heat exchanger (15) in the vehicle air conditioner (10) having a blower (14) for blowing air toward the passenger compartment. ), And the heat radiation side heat exchanging part (18) performs heat exchange with the air sent from the blower (14) to dissipate heat.
前記車両用空調装置(10)の停止時には、前記車両用空調装置(10)の吹出モードを全閉モードとして、前記送風機(14)を回転させることを特徴とする請求項1に記載の車両用電子機器冷却装置。   The vehicle air conditioner (10) according to claim 1, wherein when the vehicle air conditioner (10) is stopped, the blower (14) is rotated with the blowing mode of the vehicle air conditioner (10) set to a fully closed mode. Electronic equipment cooling device. 一端に吸込口(13a、13b)、他端に吹出口(35〜37)を有して空気通路を成す空調ケース(12a)と、
前記吸込口(13a、13b)の内部側に配設されて前記吸込口(13a、13b)から前記吹出口(35〜37)を介して車室内へと向かう空気流を発生させる送風機(14)と、
前記送風機(14)の空気流れ下流側に配置されて前記送風機(14)から送風される空気を冷却する冷房用熱交換器(15)とを備え、
前記送風機(14)から前記冷房用熱交換器(15)へと向かう空気流れ方向(A)と前記冷房用熱交換器(15)の通風方向(B)とが略直交する車両用空調装置において、
前記送風機(14)と前記冷房用熱交換器(15)との間の空気通路中に請求項1に記載の放熱側熱交換部(18)を配置するとともに、
前記放熱側熱交換部(18)の通風方向(C)を、前記空気流れ方向(A)よりも前記冷房用熱交換器(15)の空気流入面中央部に向くように傾斜させたことを特徴とする車両用空調装置。
An air-conditioning case (12a) having an inlet (13a, 13b) at one end and an air outlet (35-37) at the other end to form an air passage;
A blower (14) that is disposed on the inner side of the suction port (13a, 13b) and generates an air flow from the suction port (13a, 13b) to the vehicle interior via the blowout port (35-37). When,
A cooling heat exchanger (15) that is arranged on the downstream side of the air flow of the blower (14) and cools the air blown from the blower (14),
In a vehicle air conditioner in which an air flow direction (A) from the blower (14) to the cooling heat exchanger (15) and a ventilation direction (B) of the cooling heat exchanger (15) are substantially orthogonal to each other ,
While arrange | positioning the thermal radiation side heat exchange part (18) of Claim 1 in the air path between the said air blower (14) and the said heat exchanger for cooling (15),
The ventilation direction (C) of the heat radiation side heat exchanging part (18) is inclined so as to face the center of the air inflow surface of the cooling heat exchanger (15) rather than the air flow direction (A). A vehicle air conditioner.
車室内を暖房する場合、前記放熱側熱交換部(18)からの放熱を補助加熱として利用したことを特徴とする請求項3に記載の車両用空調装置。   The vehicle air conditioner according to claim 3, wherein when the vehicle interior is heated, heat radiation from the heat radiation side heat exchange section (18) is used as auxiliary heating.
JP2005264283A 2005-09-12 2005-09-12 Electronic equipment cooling system and vehicular air conditioner Pending JP2007076426A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009023566A (en) * 2007-07-20 2009-02-05 Valeo Thermal Systems Japan Corp Unit combinedly used for ventilation, air conditioning and exhaust heat recovery utilization, and air conditioner for vehicle
WO2014017022A1 (en) * 2012-07-25 2014-01-30 トヨタ車体株式会社 Air-conditioning system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009023566A (en) * 2007-07-20 2009-02-05 Valeo Thermal Systems Japan Corp Unit combinedly used for ventilation, air conditioning and exhaust heat recovery utilization, and air conditioner for vehicle
WO2014017022A1 (en) * 2012-07-25 2014-01-30 トヨタ車体株式会社 Air-conditioning system
JP2014024413A (en) * 2012-07-25 2014-02-06 Denso Corp Air conditioner

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