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JP4123947B2 - Air conditioner for vehicles - Google Patents

Air conditioner for vehicles Download PDF

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Publication number
JP4123947B2
JP4123947B2 JP2003020463A JP2003020463A JP4123947B2 JP 4123947 B2 JP4123947 B2 JP 4123947B2 JP 2003020463 A JP2003020463 A JP 2003020463A JP 2003020463 A JP2003020463 A JP 2003020463A JP 4123947 B2 JP4123947 B2 JP 4123947B2
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Prior art keywords
air
rear seat
seat
vehicle
opening
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JP2004230995A (en
Inventor
仁志 近藤
和行 新美
浩司 松永
眞也 熊本
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Denso Corp
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Denso Corp
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Priority to DE200410004303 priority patent/DE102004004303A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00064—Air flow details of HVAC devices for sending air streams of different temperatures into the passenger compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00078—Assembling, manufacturing or layout details
    • B60H2001/00107—Assembling, manufacturing or layout details characterised by the relative position of the heat exchangers, e.g. arrangements leading to a curved airflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/0015—Temperature regulation
    • B60H2001/00164—Temperature regulation with more than one by-pass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00185—Distribution of conditionned air
    • B60H2001/00192—Distribution of conditionned air to left and right part of passenger compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00185—Distribution of conditionned air
    • B60H2001/002—Distribution of conditionned air to front and rear part of passenger compartment

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、前席用空調ユニットを利用して車室内の後席側へ空調風を吹き出す車両用空調装置において、後席側バイレベルモード時における冷風と温風の混合性を向上するための改良に関する。
【０００２】
【従来の技術】
従来、前席用空調ユニットを利用して車室内の後席側へ空調風を吹き出す車両用空調装置は知られている（例えば、特許文献１参照）。
【０００３】
図９はこの従来技術を示すものであり、空調ケース１１内に暖房用熱交換器をなすヒータコア１３を配置するとともに、この空調ケース１１内部においてヒータコア１３の上側に前席用冷風バイパス通路１８を形成し、ヒータコア１３の下側に後席用冷風バイパス通路１９を形成している。また、ヒータコア１３の熱交換部１３ａのうち、上側領域に前席用通路１６を形成し、熱交換部１３ａの下側領域に後席用温風通路１７を形成している。
【０００４】
そして、前席用冷風バイパス通路１８を通過する冷風とヒータコア１３の前席用通路１６を通過する温風との風量割合を前席用エアミックスドア２０により調整して、車室内の前席側への吹出空気温度を制御する。また、後席用冷風バイパス通路１９を通過する冷風とヒータコア１３の後席用通路１７を通過する温風との風量割合を後席用エアミックスドア２１により調整して、車室内の後席側への吹出空気温度を独立に制御可能としている。
【０００５】
後席用エアミックスドア２１の下流側（車両後方側）には冷風と温風を混合する後席用空気混合部５０を形成し、この後席用空気混合部５０の更に下流側の上側に後席用フェイス開口部３８を配置し、この後席用フェイス開口部３８の下側に後席用フット開口部３９を配置し、この後席用の両吹出開口部３８、３９を後席用吹出モードドア５１により開閉して後席側の吹出モードを切り替えるようにしている。後席用フェイス開口部３８には図示しない後席用フェイスダクトが接続され、また、後席用フット開口部３６には図示しない後席用フットダクトが接続される。そして、後席用フェイスダクト先端部の後席用フェイス吹出口から後席乗員の上半身側へ空調風を吹き出し、また、後席用フットダクト先端部の後席用フット吹出口から後席乗員の足元側へ空調風を吹き出すようにしている。
【０００６】
【特許文献１】
特開２０００−６２４４２号公報
【０００７】
【発明が解決しようとする課題】
ところで、後席用吹出モードドア５１を破線で示す中間位置５１’に操作すると、両吹出開口部３８、３９が同時に開口され、後席側の吹出モードがバイレベルモードとなる。この後席側のバイレベルモード時に、後席用エアミックスドア２１を破線で示す中間位置２１’に操作すると、ヒータコア１３の熱交換部１３ａの後席用通路１７を通過した温風が矢印ａのように両ドア２１、５１の板面の上側を通過して主に後席用フェイス開口部３８側へ流れ、また、ヒータコア１３下側の後席用冷風バイパス通路１９を通過した冷風が矢印ｂのように両ドア２１、５１の板面の下側を通過して主に後席用フット開口部３６に流れる。
【０００８】
この結果、後席側のバイレベルモード時に後席側フェイス吹出温度が後席側フット吹出温度よりも高くなってしまう。そのため、後席乗員の顔部が火照る等の不具合が発生し、空調フィーリングを悪化させる。
【０００９】
そこで、図１０のように後席用エアミックスドア２１と後席用吹出モードドア５１との間隔を拡大して後席用空気混合部５０の容積を拡大するとともに、この後席用空気混合部５０の上側に温風ガイド５０ａを、また、下側に冷風ガイド５０ｂをそれぞれ配置して、温風を矢印ｃのように下側へガイドし、また、冷風は矢印ｄのように上側へガイドすることにより、温風と冷風とを１８０°逆方向から対向的に衝突させ、冷温風の混合性を向上させることを本発明者らは検討してみた。
【００１０】
この検討例によると、冷温風の混合性を向上させることができるが、その反面、上下の両ガイド５０ａ、５０ｂによって冷温風の流れ方向が急激に大きく曲げられ冷温風が衝突するので、空気流れの圧損が増大して後席側への吹出風量を低下させる。また、後席用空気混合部５０の容積を拡大するので、空調ケース１１の体格が大型化し、車両搭載性も悪化させる。
【００１１】
本発明は上記点に鑑みてなされたものであり、前席用空調ユニットを利用して後席側の吹出温度調整を行う車両用空調装置において、後席側空気流れの圧損増大および空調ケースの体格の大型化を抑制するとともに、後席側のバイレベルモード時における空調フィーリングの改善を図ることを目的とする。
【００１２】
【課題を解決するための手段】
上記目的を達成するため、請求項１に記載の発明では、車室内前席側に配置される空調ケース（１１）において暖房用熱交換器（１３）の空気流れ下流側に、前席用吹出開口部（２８、３１、３４）および後席用吹出開口部（３８、３９）を配置し、前席用吹出開口部（２８、３１、３４）を通して車室内の前席側領域に空気を吹き出すとともに、後席用吹出開口部（３８、３９）に後席用ダクト（４５、４６）を接続し、後席用ダクト（４５、４６）の下流端部から車室内の後席側領域に空気を吹き出す車両用空調装置において、
後席用吹出開口部として車両上下方向に隣接配置される後席用フェイス開口部（３８）と後席用フット開口部（３９）とを備え、
後席用フェイス開口部（３８）と後席用フット開口部（３９）は、後席用フェイス開口部（３８）が上側で、後席用フット開口部（３９）が下側となるように隣接配置されており、
後席用ダクトとして後席用フェイス開口部（３８）に接続される後席用フェイスダクト（４５）と、後席用フット開口部（３９）に接続される後席用フットダクト（４６）とを備え、
暖房用熱交換器（１３）の熱交換用コア部（１３ａ）のうち下側領域に後席用通路（１７）を形成するとともに、暖房用熱交換器（１３）の下側に暖房用熱交換器（１３）をバイパスして冷風が流れる後席用冷風バイパス通路（１９）を形成し、
後席用冷風バイパス通路（１９）を通過する冷風と、暖房用熱交換器（１３）の後席用通路（１７）を通過する温風との風量割合を後席用エアミックスドア（２１）により調整するようになっており、
後席用冷風バイパス通路（１９）からの冷風と後席用通路（１７）からの温風とを車両左右方向に並べるガイド手段（４３、４４）を空調ケース（１１）内に設け、
冷風と温風を車両左右方向に並べた状態で後席用フェイス開口部（３８）および後席用フット開口部（３９）に導入し、冷風と温風を後席用フェイスダクト（４５）および後席用フットダクト（４６）内で混合することを特徴とする。
【００１３】
これによると、暖房用熱交換器（１３）の後席用通路（１７）を通過する温風が後席用冷風バイパス通路（１９）の冷風の上側を流れる構成であっても、この温風と冷風をガイド手段（４３、４４）により車両左右方向に並ぶように方向転換して、上下に隣接配置される後席用フェイス開口部（３８）と後席用フット開口部（３９）とに略均等に温風と冷風を導入できる。そして、この冷風と温風を長さの長い後席用フェイスダクト（４５）および後席用フットダクト（４６）内でそれぞれ十分混合できる。
【００１４】
このため、後席側のバイレベルモード時に、後席乗員の欲する所望温度の空調風を後席用フェイスダクト（４５）および後席用フットダクト（４６）の下流端部からそれぞれ吹き出すことができ、後席側バイレベルモード時における空調フィーリングを向上できる。
【００１５】
しかも、温風と冷風を車両左右方向に並んだ状態で後席用フェイス開口部（３８）および後席用フット開口部（３９）の双方に導入し、そして、長さの長い後席用ダクト（４５、４６）を有効活用して冷温風を十分混合できるから、空調ケース（１１）内に、後席側の冷温風を混合するための空気混合空間を特別に設定する必要がなく、空調ケース（１１）を小型化できる。
【００１６】
更に、冷温風の混合作用自体は後席用ダクト（４５、４６）内部で行うから、ガイド手段（４３、４４）は冷温風の流れ方向を車両左右方向の中央部側または外側へ滑らかにガイドするだけでよく、図１０の例のような冷温風の流れ方向の急激な曲げを設定する必要がない。
【００１７】
この結果、請求項１では図１０の例に比較して、ガイド手段（４３、４４）の設置に伴う後席側流路の圧損増大を大幅に低減でき、後席側への吹出風量の低下を僅少量に抑制することができる。
【００１８】
請求項２に記載の発明のように、請求項１において、ガイド手段は具体的には、冷風を車両左右方向の中央部側にガイドする冷風ガイド手段（４３）と、温風を冷風よりも車両左右方向の外側にガイドする温風ガイド手段（４４）とにより構成できる。
【００１９】
また、請求項３に記載の発明のように、請求項１において、ガイド手段は具体的には、冷風を車両左右方向の外側にガイドする冷風ガイド手段（４３）と、温風を冷風よりも車両左右方向の中央部側にガイドする温風ガイド手段（４４）とにより構成してもよい。
【００２４】
なお、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ものである。
【００２５】
【発明の実施の形態】
（第１実施形態）
図１、図２は第１実施形態を示すものであり、本実施形態による車両用空調装置の前席用空調ユニット部は、大別して、図１に示す空調本体ユニット１０と、この空調本体ユニット１０に空気を送風する送風機ユニット（図示せず）との２つの部分に分かれている。
【００２６】
送風機ユニットは車室内前部の計器盤（図示せず）内側のうち、中央部から助手席側へオフセットして配置されており、これに対し、空調本体ユニット１０は車室内前部の計器盤（図示せず）内側のうち、車両左右（幅）方向の略中央部に配置されている。空調本体ユニット１０は、計器盤内側にて、車両の前後、上下および左右方向に対して、図１、図２の矢印で示す搭載方向で配置されている。
【００２７】
送風機ユニットは周知のごとく外気（車室外空気）と内気（車室内空気）を切替導入する内外気切替箱と、この内外気切替箱を通して吸入した空気を送風する遠心式の送風機とを有している。
【００２８】
空調本体ユニット１０は車室内へ向かって送風される空気通路を構成する樹脂製の空調ケース１１を有し、この空調ケース１１内に冷房用熱交換器をなす蒸発器１２と暖房用熱交換器をなすヒータコア１３を両方とも一体的に内蔵している。空調ケース１１内の、最も車両前方側の部位には空気入口空間１４が形成されている。この空気入口空間１４には送風機ユニットの遠心式送風機の送風空気が流入する。
【００２９】
空調ケース１１内において空気入口空間１４直後の部位に蒸発器１２が略垂直に配置されている。この蒸発器１２は周知のごとく冷凍サイクルの低圧冷媒の蒸発潜熱を送風空気から吸熱して送風空気を冷却するものである。そして、蒸発器１２の空気流れ下流側（車両後方側）に、所定の間隔を開けてヒータコア１３が配置されている。
【００３０】
ヒータコア１３は、蒸発器１２を通過した冷風を再加熱するものであって、その内部に、図示しない車両エンジンから高温の温水（エンジン冷却水）が流れ、この温水を熱源として空気を加熱するものである。ヒータコア１３は周知のごとく温水が通過する偏平チューブとこれに接合されたコルゲートフィンとからなる熱交換用コア部１３ａを有している。この熱交換用コア部１３ａの下部に温水が流入する入口タンク１３ｂが配置され、熱交換用コア部１３ａの上部に温水を流出させる出口タンク１３ｃが配置されている。
【００３１】
ヒータコア１３は、その上部（出口タンク１３ｃ側部分）が下部（入口タンク１３ｂ側部分）よりも車両前方側（蒸発器１２側）に位置するように鉛直方向から所定角度だけ傾斜配置されている。
【００３２】
ヒータコア１３の熱交換用コア部１３ａの空気流れ上流側には仕切り部材１５が配置され、この仕切り部材１５と空気流れ下流側に位置する後述の切替ドア３７とにより熱交換用コア部１３ａの空気通路が上側の前席用通路１６と下側の後席用通路１７とに仕切られる。この仕切り部材１５はヒータコア１３の空気流れ上流側において、空調ケース１１内部空間の車両左右方向（図１の紙面垂直方向）の全長にわたって延びるように配置されて、空気流れを整流する整流部材の役割を兼ねている。なお、仕切り部材１５は空調ケース１１と別体の板状部材あるいは空調ケース１１に一体成形した板状部材により構成される。
【００３３】
空調ケース１１内の空気通路において、ヒータコア１３の上方部位および下方部位には、それぞれヒータコア１３をバイパスして空気（冷風）が流れる前席用冷風バイパス通路１８、後席用冷風バイパス通路１９が形成されている。
【００３４】
また、蒸発器１２とヒータコア１３との間には前席用エアミックスドア２０および後席用エアミックスドア２１がそれぞれ配置されている。ここで、前席用エアミックスドア２０は車室内前席側への吹出空気温度を調整する前席側温度調整手段を構成するものであって、本例では、可撓性を有するフィルムドアにより構成されている。また、後席用エアミックスドア２１は車室内後席側への吹出空気温度を調整する後席側温度調整手段を構成するものであって、本例では、回転軸２１ａを中心として回転する板ドアにより構成されている。
【００３５】
前席用エアミックスドア２０を構成するフィルムドアは、より具体的にはポリエチレン樹脂のごとく可撓性を有し、強度に優れた樹脂製フィルム状の膜状部材にて構成される。そして、フィルムドアの移動方向（上下方向）の途中部位には空気を通過させるための開口部（図示せず）が形成されている。
【００３６】
一方、空調ケース１１内部のうち、前席用冷風バイパス通路１８の上端部に第１巻き取り軸２２を回転可能に配置し、また、ヒータコア１３の熱交換用コア部１３ａの上流側にて仕切り部材１５の上部に第２巻き取り軸２３を回転可能に配置している。
【００３７】
そして、前席用エアミックスドア２０を構成するフィルムドアの一端部を第１巻き取り軸２２に固定し、他端部を第２巻き取り軸２３に固定し、フィルムドアの両端部を第１、第２巻き取り軸２２、２３に巻き取ったり、第１、第２巻き取り軸２２、２３から巻き戻す（送り出す）ことができるようにしている。これにより、前席用エアミックスドア２０は、第１、第２巻き取り軸２２、２３の間で一定の張力が付与された状態でもって前席用冷風バイパス通路１８とヒータコア１３の熱交換用コア部１３ａの前席用通路１６とをそれぞれ横切るようにして、空調ケース１１内の上下方向に移動可能となっている。
【００３８】
上記第１、第２巻き取り軸２２、２３のうちいずれか一方にドア操作機構（図示せず）を連結し、このドア操作機構により第１、第２巻き取り軸２２、２３を連動して正逆両方向に回転駆動するようになっている。
【００３９】
前席用エアミックスドア２０を空調ケース１１内の上下方向に移動させることにより、前席用エアミックスドア２０の開口部（図示せず）を任意の位置に移動させることができる。この開口部の移動によって、上記各通路１６、１８の開度を任意に調整して、前席用通路１６で加熱される温風と前席用冷風バイパス通路１８を通過する冷風との風量割合を任意に調整できる。
【００４０】
また、後席用エアミックスドア２１の回転軸２１ａにも独立のドア操作機構（図示せず）を連結し、このドア操作機構により後席用エアミックスドア２１を前席用エアミックスドア２０と独立に回転駆動するようになっている。
【００４１】
後席用エアミックスドア２１の回転によりヒータコア１３の熱交換用コア部１３ａの後席用通路１７と後席用冷風バイパス通路１９の開度を任意に調整して、ヒータコア１３の後席用通路１７で加熱される温風と、後席用冷風バイパス通路１９を通過する冷風との風量割合を任意に調整できる。
【００４２】
一方、空調ケース１１内部において、ヒータコア１３の熱交換用コア部１３ａの前席用通路１６の空気流れ下流側（車両後方側）の部位には、ヒータコア１３の直後から上方に向かう前席用温風通路２６が形成されている。前席用温風通路２６の下流側（上方側）はヒータコア１３の上方部において前席用冷風バイパス通路１８の下流側と合流し、冷風と温風の混合を行う前席用空気混合部２７を形成している。
【００４３】
そして、空調ケース１１の上面部において前席用空気混合部２７の上方部位にデフロスタ開口部２８が開口している。このデフロスタ開口部２８にはデフロスタダクト２９が接続され、このデフロスタダクト２９の先端部にデフロスタ吹出口２９ａを設け、このデフロスタ吹出口２９ａから車両前面窓ガラスの内面に向けて空調風を吹き出す。デフロスタ開口部２８は回転可能な板状のデフロスタドア３０により開閉される。
【００４４】
空調ケース１１の上面部において、デフロスタ開口部２８よりも車両後方側（乗員寄り）の部位に前席用フェイス開口部３１が設けられている。この前席用フェイス開口部３１には前席用フェイスダクト３２が接続され、前席用フェイスダクト３２の先端部に前席用フェイス吹出口３２ａを設けている。この前席用フェイス吹出口３２ａは計器盤上方側に配置され、前席乗員の上半身側に向けて空調風を吹き出す。前席用フェイス開口部３１は回転可能な板状の前席用フェイスドア３３により開閉される。
【００４５】
次に、空調ケース１１において、前席用フェイス開口部３１の下方側に前席用フット開口部３４が設けられている。この前席用フット開口部３４にはフットダクト３５が接続され、このフットダクト３５の下端部に前席用フット吹出口３５ａを設け、この前席用フット吹出口３５ａから前席乗員の足元部に向けて空調風を吹き出す。前席用フット開口部３４は回転可能な板状の前席用フットドア３６により開閉される。
【００４６】
上記したデフロスタドア３０と前席用フェイスドア３３と前席用フットドア３６は、前席用吹出モードドア手段であって、図示しないリンク機構を介して共通のドア操作機構に連結される。従って、この共通のドア操作機構により前席用吹出モードドア３０、３３、３６が連動操作されるようになっている。
【００４７】
一方、前述の切替ドア３７は回転軸３７ａにより回転可能な板ドアからなり、ヒータコア１３の下流側（車両後方側）の下方側部位に配置されている。より具体的には、ヒータコア１３の空気下流側部位において、前席用通路１６と後席用通路１７との仕切り位置の延長方向に切替ドア３７の回転軸３７ａが配置され、切替ドア３７は、ヒータコア１３の空気下流側部位において後席用通路１７に対向する領域で回転する。
【００４８】
切替ドア３７は、後席用エアミックスドア２１と連動して操作されるため、切替ドア３７の回転軸３７ａの一端部を空調ケース１１の外部に突出させて、図示しないリンク機構を介して、前述した後席用エアミックスドア２１の操作機構に連結している。
【００４９】
そして、後席用エアミックスドア２１が図１の実線で示す最大暖房位置位置に操作されると、切替ドア３７が図１の実線位置に操作され、切替ドア３７が仕切り部材１５の延長上に位置してヒータコア１３の前席用通路１６と後席用通路１７とを仕切り、後席用通路１７と前席用温風通路２６との連通を遮断する。従って、図１の実線位置は切替ドア３７の「仕切り位置」である。
【００５０】
これに反し、後席用エアミックスドア２１が図１の破線で示す最大冷房位置に操作されると、切替ドア３７が図１の破線位置に操作され、後席用通路１７と後席用吹出開口部３８、３９との連通を遮断して後席用通路１７を前席用温風通路２６に連通させる。従って、図１の破線位置は切替ドア３７の「後席側シャット位置」である。切替ドア３７は後席用エアミックスドア２１の回転角の変化に連動して上記の「仕切り位置」と「後席側シャット位置」との間で連続的に回転変位する。
【００５１】
上記した後席用吹出開口部３８、３９は、空調ケース１１の車両後方側における下端部付近に車両上下方向に隣接配置されている。この後席用吹出開口部は、具体的には、後席用フェイス開口部３８と後席用フット開口部３９であり、後席用フェイス開口部３８が上側に位置し、後席用フット開口部３９は後席用フェイス開口部３８の下側に位置している。
【００５２】
なお、本実施形態では図２に示すように空調ケース１１内部の車両左右方向の中央部に仕切り板４０を配置して、空調ケース１１の内部通路を車両左右方向の右側通路と左側通路とに仕切るようにしてある。そのため、後席用フェイス開口部３８と後席用フット開口部３９はこの空調ケース１１内部の右側通路と左側通路とに対応して左右に分割して設けてある。
【００５３】
この後席用フェイス開口部３８と後席用フット開口部３９はともにヒータコア１３の熱交換用コア部１３ａの後席用通路１７の下流側（車両後方側）および後席用冷風バイパス通路１９の下流側（車両後方側）に連通し、後席用通路１７からの温風４１（斜線矢印）および後席用冷風バイパス通路１９からの冷風４２（白抜き矢印）が後席用フェイス開口部３８と後席用フット開口部３９に導入される。
【００５４】
その際、本実施形態では図２に示すように空調ケース１１の内部において温風４１と冷風４２が車両左右方向に並んだ状態で温風両開口部３７、３８に導入されるようになっている。
【００５５】
すなわち、本実施形態では、後席用冷風バイパス通路１９の下流側（車両後方側）の左右両側部に冷風ガイド４３、４３を配置している。この左右の冷風ガイド４３、４３相互間の間隔が空気流れの上流端（車両前方側端部）で最大となり、後席用冷風バイパス通路１９の車両左右方向の幅寸法と同等になっている。
【００５６】
そして、空気流れの下流側へ行くに従って、左右の冷風ガイド４３、４３相互が互いに接近して、相互の間隔が減少するように冷風ガイド４３、４３を滑らかに湾曲した形状にしてある。
【００５７】
換言すると、左右の冷風ガイド４３、４３は上流側から下流側へ行くに従って車両左右方向の中央部側へ湾曲する湾曲形状にしてある。これにより、後席用冷風バイパス通路１９からの冷風４２が冷風ガイド４３、４３の湾曲形状に沿って空調ケース１１内部の中央部側へガイドされる。
【００５８】
一方、ヒータコア１３の後席用通路１７の下流側（車両後方側）において、切替ドア３７の回転作動空間よりも下流側領域に左右の温風ガイド４４、４４をＶ字状に配置してある。この左右の温風ガイド４４、４４は本例では平板状の板部材により構成され、温風ガイド４４、４４の空気流れ上流端（車両前方側端部）は互いに空調ケース１１の内部において車両左右方向の中央部の１箇所に集合するように配置されている。そして、空気流れの下流側へ行くに従って、左右の温風ガイド４４、４４を車両左右方向の外側へ広げるとともに徐々に下方へ垂下させるようにしている。
【００５９】
左右の温風ガイド４４、４４の下流端は左右の冷風ガイド４３、４３の下流側部位の上端面上、あるいはこの上端面より左右外側に配置している。これにより、後席用通路１７からの温風４１が左右の温風ガイド４４、４４の面に沿って車両左右方向の外側へガイドされ、冷風ガイド４３、４３の左右外側の領域に導入される。
【００６０】
以上により、後席用フェイス開口部３８および後席用フット開口部３９において、車両左右方向の中央部寄り（内側）の部位に冷風４２が流れ、左右の冷風ガイド４３、４３の車両左右方向の外側へ温風４１が流れるようになっている。
【００６１】
なお、冷風ガイド４３、４３および温風ガイド４４、４４は樹脂成形にて空調ケース１１に一体に成形することができる。しかし、空調ケース１１の成形形状の簡素化のために、冷風ガイド４３、４３および温風ガイド４４、４４を空調ケース１１とは別体にて単独に成形し、この別体の冷風ガイド４３、４３および温風ガイド４４、４４を空調ケース１１に接着等の手段で固定しても良い。
【００６２】
後席用フェイス開口部３８の周縁部に後席用フェイスダクト４５の上流端を嵌合接続している。同様に、後席用フット開口部３９の周縁部に後席用フットダクト４６の上流端を嵌合接続している。後席用フェイスダクト４５および後席用フットダクト４６の下流端は車室内の後席側領域に配置され、後席用フェイスダクト４５の下流端には後席乗員の上半身側に向けて空調風を吹き出す後席用フェイス吹出口４５ａが設けてある。また、後席用フットダクト４６の下流端には後席乗員の足元に向けて空調風を吹き出す後席用フット吹出口４６ａが設けてある。
【００６３】
図１に示すように後席用フェイス開口部３８の内部に後席用フェイスドア３８ａを回転可能に配置し、また、後席用フット開口部３９の内部に後席用フットドア３９ａを回転可能に配置している。ここで、後席用フェイス開口部３８および後席用フット開口部３９は左右に分割して配置されているから、後席用フェイスドア３８ａおよび後席用フットドア３９ａも左右に分割して配置される。
【００６４】
後席用フェイスドア３８ａおよび後席用フットドア３９ａは、本例では板ドアの中央部に回転軸を配置したバタフライドアにより構成され、それぞれ開口部３８、３９を開閉するようになっている。また、合計４個のドア３８ａ、３９ａの回転軸は共通の後席用吹出モード操作機構に連結され、連動操作されるようになっている。この後席用吹出モード操作機構および上記した他の各種のドア操作機構は、いずれもサーボモータを用いたアクチュエータにより構成される。
【００６５】
また、本実施形態では、前述したように空調ケース１１内部の空気通路を仕切り板４０により車両左右方向の右側通路と左側通路とに仕切っているので、この右側通路と左側通路とに対応して前席用エアミックスドア２０、後席用エアミックスドア２１、前席用吹出開口部２８、３１、３４等も左右に分割して設けてある。そして、左右の前席用エアミックスドア２０および左右の後席用エアミックスドア２１にそれぞれ独立の操作機構を設けて、車室内前席側および後席側の左右への吹出空気温度をそれぞれ独立に制御可能としている。
【００６６】
次に、上記構成において本実施形態の作動を説明する。最初に、前席側および後席側の吹出モードとしてフェイスモードが設定された場合を説明すると、前席側では前席用フェイスドア３３により前席用フェイス開口部３１のみを開口し、デフロスタ開口部２８と前席用フット開口部３４はドア３０、３６により閉塞する。また、後席側では、後席用フェイスドア３８ａにより後席用フェイス開口部３８を開口し、後席用フットドア３９ａにより後席用フット開口部３９を閉塞する。
【００６７】
そして、前席用エアミックスドア２０を構成するフィルムドアの開口部が前席用冷風バイパス通路１８と全面的に重合して前席用冷風バイパス通路１８を全開するとともにフィルムドアの膜部がヒータコア１３の前席用通路１６を全閉する位置に前席用エアミックスドア２０を移動させると、前席側は最大冷房状態となる。
【００６８】
また、後席用エアミックスドア２１を図１の破線位置に回転操作すると、ヒータコア１３の後席用通路１７を全閉するとともに後席用冷風バイパス通路１９を全開するので、後席側も最大冷房状態となる。また、後席用エアミックスドア２１が最大冷房位置に操作されることに連動して、切替ドア３７は、図１の破線位置に示すようにヒータコア１３の後席用通路１７と後席用吹出開口部３８、３９側との連通を遮断する「後席シャット位置」に操作される。
【００６９】
この状態において、送風機ユニットの送風機および冷凍サイクルが運転されると、送風機ユニットからの送風空気が空調ケース１１の最前部の空気入口空間１４に流入した後、蒸発器１２で冷却されて冷風となる。
【００７０】
最大冷房状態ではこの冷風がそのまま、前席用冷風バイパス通路１８、前席用空気混合部２７および前席用フェイス開口部３１を経て前席用フェイスダクト３２を通過し、前席用フェイス吹出口３２ａから前席乗員の上半身に向けて冷風が吹き出す。
【００７１】
これと同時に、上記冷風がそのまま、後席用冷風バイパス通路１９を経て後席用フェイス開口部３８、後席用フェイスダクト４５を通過し、後席用フェイス吹出口４５ａから後席乗員の上半身に向けて冷風が吹き出す。
【００７２】
そして、前席用エアミックスドア２０を図１の下方へ移動させると、前席用エアミックスドア２０を構成するフィルムドアの開口部も下方へ移動して前席用冷風バイパス通路１８およびヒータコア１３の前席用通路１６の双方と重合するので、前席用冷風バイパス通路１８およびヒータコア１３の前席用通路１６の双方を所定開度で開口する。
【００７３】
また、後席用エアミックスドア２１を図１の破線位置から実線位置の方向へ回転操作すると、後席用冷風バイパス通路１９およびヒータコア１３の後席用通路１７の双方を所定開度で開口する。切替ドア３７は後席用エアミックスドア２１の回転操作に連動して回転操作され、破線で示す「後席シャット位置」から実線で示す「仕切り位置」側へ所定角度だけ回転変位する。
【００７４】
従って、前席側および後席側の双方において、冷風と温風の風量割合により温度調整された所望温度の空調風を車室内の乗員上半身側へ吹き出すことができる。そして、前席用エアミックスドア２０および後席用エアミックスドア２１の操作位置を独立に制御することにより、前席側および後席側の車室内吹出空気温度を独立に制御することができる。
【００７５】
次に、前席側および後席側の双方においてフットモードが設定された場合を説明すると、フットモード時には前席用フェイス開口部３１が前席用フェイスドア３３により全閉され、デフロスタ開口部２８がデフロスタドア３０により小開度だけ開口し、前席用フット開口部３４は前席用フットドア３６により全開状態にて開口する。一方、後席側では、後席用フェイスドア３８ａにより後席用フェイス開口部３８を閉塞し、後席用フットドア３９ａにより後席用フット開口部３９を開口する。
【００７６】
そして、前席用エアミックスドア２０を構成するフィルムドアの開口部がヒータコア１３の前席用通路１６と全面的に重合して前席用通路１６を全開するとともにフィルムドアの膜部が前席用冷風バイパス通路１８を全閉する位置に前席用エアミックスドア２０を移動させると、前席側は最大暖房状態となる。また、後席用エアミックスドア２１を図１の実線位置に回転操作して後席用冷風バイパス通路１９を全閉するとともにヒータコア１３の後席用通路１７を全開すると、後席側も最大暖房状態となる。
【００７７】
切替ドア３７は、後席用エアミックスドア２１が最大暖房状態に回転操作されることに連動して、実線で示す「仕切り位置」に操作され、ヒータコア１３の前席用通路１６と後席用通路１７とを仕切る。
【００７８】
最大暖房状態では、送風機ユニットの送風空気の全量がヒータコア１３の熱交換用コア部１３ａに流入し、加熱される。ヒータコア１３の前席用通路１６で加熱された温風の大部分は前席用温風通路２６、前席用空気混合部２７およびフット開口部３４を通過してフットダクト３５のフット吹出口３５ａから前席乗員の足元側へ向かって吹き出す。また、ヒータコア１３の前席用通路１６で加熱された温風の一部は前席用空気混合部２７からデフロスタ開口部２８側へ分岐してデフロスタダクト２９のデフロスタ吹出口２９ａから車両窓ガラスへ向かって吹き出す。
【００７９】
なお、フットモードにおいても、前席用エアミックスドア２０および後席用エアミックスドア２１の操作位置を独立に制御することにより、前席側および後席側の車室内吹出空気温度を独立に制御できることはもちろんである。
【００８０】
次に、前席側吹出モードとしてデフロスタモードが設定された場合を説明すると、デフロスタモード時には前席用フェイス開口部３１および前席用フット開口部３４が前席用フェイスドア３３、前席用フットドア３６により全閉され、デフロスタ開口部２８がデフロスタドア３０により全開状態にて開口する。
【００８１】
このデフロスタモード設定に連動して空調用制御装置（図示せず）から後席用エアミックスドア２１の操作機構のアクチュエータに制御信号を出力して、後席用エアミックスドア２１を実線で示す最大暖房位置に維持したまま、切替ドア３７を破線で示す「後席側シャット位置」に操作する。これにより、ヒータコア１３の後席用通路１７と後席用吹出開口部３８、３９との連通を遮断して後席用通路１７を前席用温風通路２６に連通させる。
【００８２】
以上によりヒータコア１３の前席用通路１６および後席用通路１７の双方を通過した温風の全量を前席用温風通路２６を経てデフロスタ開口部２８に流入できる。従って、後席側への吹出風量を零にしてデフロスタ吹出風量を最大限に増大でき、車両窓ガラスの防曇性能を効果的に発揮できる。
【００８３】
なお、デフロスタモードにおいても、前席用エアミックスドア２０の操作位置は自由に調整できるので、前席用エアミックスドア２０の操作位置の調整によりデフロスタ吹出空気温度を任意に調整できる。
【００８４】
前席側の吹出モードとして、フェイスモード、フットモードおよびデフロスタモードについて説明したが、その他に、（１）前席用フェイス開口部３１と前席用フット開口部３４を同時に開口する前席側のバイレベルモード、後席用フェイス開口部３８および後席用フット開口部３９を同時に開口する後席側のバイレベルモード、（２）フットモードに比較してデフロスタ開口部２８の開度を増大するとともに、前席用フット開口部３４の開度を減少させて、デフロスタ吹出風量とフット吹出風量とを同程度とする前席側のフットデフロスタモード等を設定できる。
【００８５】
次に、後席側のバイレベルモードにおける冷温風の混合作用について詳述する。後席側のバイレベルモード時には後席用フェイス開口部３８および後席用フット開口部３９の双方を後席用フェイスドア３８ａおよび後席用フットドア３９ａにより開口する。バイレベルモードは、通常、春秋の中間温度期に使用されるので、後席用エアミックスドア２１は実線で示す最大暖房位置と破線で示す最大冷房位置との中間位置に操作される。これに連動して、切替ドア３７も実線で示す「仕切り位置」と破線で示す「後席シャット位置」との中間位置に操作される。
【００８６】
これにより、蒸発器１２通過後、後席側へ送風される冷風の一部がヒータコア１３の後席用通路１７を通過して温風４１となり、この温風４１が後席用の両開口部３８、３９へ向かって流れる。これと同時に、後席側へ送風される冷風の残部が後席用冷風バイパス通路１９を通過して矢印４２のように後席用の両開口部３８、３９へ向かって流れる。
【００８７】
ところで、本実施形態では、後席用冷風バイパス通路１９の下流側（車両後方側）の左右両側部に、空気流れの上流側から下流側へ行くに従って車両左右方向の中央部側へ滑らかに湾曲する冷風ガイド４３、４３を配置しているから、後席用冷風バイパス通路１９からの冷風４２が図２に示すように冷風ガイド４３、４３の湾曲形状に沿って空調ケース１１内部の中央部側へガイドされる。
【００８８】
一方、ヒータコア１３の後席用通路１７の下流側（車両後方側）に、空気流れの下流側へ行くに従って車両左右方向の外側へ広がるとともに下方へ垂下する左右の温風ガイド４４、４４をＶ字状に配置してある。この左右の温風ガイド４４、４４の下流端を図２に示すように左右の冷風ガイド４３、４３の下流側部位の上端面上に配置するか、あるいはこの上端面より左右外側に配置する。
【００８９】
これにより、後席用通路１７からの温風４１が図２に示すように左右の温風ガイド４４、４４の面に沿って車両左右方向の外側へガイドされ、冷風ガイド４３、４３の左右外側の領域に導入される。
【００９０】
以上により、後席用フェイス開口部３８および後席用フット開口部３９において、それぞれ車両左右方向の中央部寄り（内側）の部位に冷風４２が流れ、左右の冷風ガイド４３、４３の車両左右方向の外側へ温風４１が流れる。従って、温風４１と冷風４２が車両左右方向に並んだ状態で後席用の両開口部３８、３９に略均等に導入されるので、温風４１と冷風４２が後席用の両開口部３８、３９の一方のみに偏って流入することがない。
【００９１】
そして、後席用の両開口部３８、３９にはそれぞれ車室内前席側から後席側まで延びる長い後席用のダクト４５、４６が接続されているので、この後席用ダクト４５、４６内を冷温風が通過する間に冷温風を十分混合できる。従って、後席乗員の欲する適切な温度の空調風を後席用フェイス開口部３８および後席用フット開口部３９から後席乗員の上半身側と足元側へ同時に吹き出すことができ、後席側のバイレベルモード時における空調フィーリングを向上できる。
【００９２】
しかも、温風４１と冷風４２を車両左右方向に並んだ状態で後席用フェイス開口部３８および後席用フット開口部３９の双方に導入し、そして、長さの長い後席用ダクト４５、４６を有効活用して冷温風を十分混合できるから、前席用空調本体ユニット１０の空調ケース１１側に、後席側の冷温風を混合するための空気混合空間を特別に設定する必要がなく、前席用空調本体ユニット１０の空調ケース１１を小型化できる。
【００９３】
更に、本実施形態による冷風ガイド４３、４３は冷風４２を車両左右方向の中央部側へ滑らかにガイドし、また、温風ガイド４４、４４は、温風４１を車両左右方向の外側へ滑らかにガイドするものであるので、前述した図１０の例のように後席側流路の圧損が大きく増大することがない。
【００９４】
すなわち、前述した図１０の例では、後席用空気混合部５０の上下両側に配置した温風ガイド５０ａと冷風ガイド５０ｂとによって、冷温風の流れ方向を矢印ｃ、ｄのように急激に大きく曲げて、温風と冷風とを対向的に衝突させるので、後席側流路の圧損が必然的に増大して、後席側への吹出風量を低下させる。これに対し、本実施形態では、冷温風の混合作用自体は後席用ダクト４５、４６内部で行うから、両ガイド４３、４３、４４、４４は冷温風の流れ方向を車両左右方向の中央部側または外側へ滑らかにガイドするだけでよく、図１０の例のような冷温風の流れ方向の急激な曲げを設定する必要がない。
【００９５】
この結果、本実施形態では図１０の例に比較して、両ガイド４３、４３、４４、４４の設置に伴う後席側流路の圧損増大を大幅に低減でき、後席側への吹出風量の低下を僅少量に抑えることができる。
【００９６】
なお、本実施形態では、前述したように空調ケース１１内部の空気通路を仕切り板４０により車両左右方向の右側通路と左側通路とに仕切って、この右側通路と左側通路とに対応して前席用エアミックスドア２０、後席用エアミックスドア２１、前席用吹出開口部２８、３１、３４、後席用吹出開口部３８、３９等も左右に分割して設けてあるので、左右の前席用エアミックスドア２０および左右の後席用エアミックスドア２１をそれぞれ独立に操作することにより、車室内前席側および後席側の左右への吹出空気温度をそれぞれ独立に制御できる。すなわち、本実施形態では、車室内の前後左右の４つの領域への吹出空気温度を独立に制御できる。
【００９７】
（第２実施形態）
第１実施形態では、冷風ガイド４３、４３により冷風４２を車両左右方向の中央部側へガイドし、温風ガイド４４、４４により温風４１を車両左右方向の外側へガイドするようにしているが、第２実施形態はこれとは逆に冷風ガイド４３、４３により冷風４２を車両左右方向の外側へガイドし、温風ガイド４４、４４により温風４１を車両左右方向の中央部側へガイドする。
【００９８】
図３、４は第２実施形態を示すものであり、第２実施形態では、冷風ガイド４３、４３を第１実施形態の温風ガイド４４、４４のようにＶ字形状に形成して、後席用冷風バイパス通路１９の冷風４２を冷風ガイド４３、４３により車両左右方向の外側へガイドするようにしている。
【００９９】
また、温風ガイド４４、４４は第１実施形態の冷風ガイド４３、４３のように上流側から下流側へ行くに従って車両左右方向の中央部側へ湾曲する湾曲形状としている。これにより、温風４１を温風ガイド４４、４４によって車両左右方向の中央部側へガイドできる。
【０１００】
ここで、温風ガイド４４、４４は冷風ガイド４３、４３の下流側先端部の部位までは冷風ガイド４３、４３の上側に位置している。そして、温風ガイド４４、４４のうち冷風ガイド４３、４３の下流側先端部よりも更に下流側（車両後方側）の部位では、冷風ガイド４３、４３の底部（すなわち、空調ケース１１の底部）まで温風ガイド４４、４４の下端部が垂下している。従って、温風ガイド４４、４４のうち冷風ガイド４３、４３の下流側先端部よりも更に下流側の部位ではガイド高さ寸法が拡大することになる。
【０１０１】
この温風ガイド４４、４４の下流側の高さ寸法拡大部分では、温風ガイド４４、４４の内側（中央部側）を温風４１が流れ、温風ガイド４４、４４の左右外側を冷風４２が流れる。
【０１０２】
第２実施形態においても、温風４１と冷風４２を車両左右方向に並べた状態で、後席用フェイス開口部３８と後席用フット開口部３９の双方に略均等に導入することにより、第１実施形態と同様の作用効果を発揮できる。
【０１０３】
（第３実施形態）
第１、第２実施形態では、ヒータコア１３の下側に後席用冷風バイパス通路１９を形成し、この後席用冷風バイパス通路１９からの冷風４２を冷風ガイド４３、４３により車両左右方向の中央部側または外側へガイドし、ヒータコア１３の後席用通路１７からの温風４１を温風ガイド４４、４４により車両左右方向の外側または中央部側へガイドして、冷風４２と温風４１を車両左右方向に並べた状態で、後席用フェイス開口部３８と後席用フット開口部３９に導入しているが、第３実施形態は、冷風ガイド４３、４３および温風ガイド４４、４４を使用せずに、冷風４２と温風４１を車両左右方向に並べた状態で、後席用フェイス開口部３８と後席用フット開口部３９に導入するものである。
【０１０４】
図５〜図８は第３実施形態を示すものであり、後席用冷風バイパス通路１９をヒータコア１３の下側ではなく、ヒータコア１３の車両左右方向の左右両側（左右外側）に形成している。すなわち、ヒータコア１３の車両左右方向の幅寸法を蒸発器１２の車両左右方向の幅寸法より所定量だけ小さくし、これにより、空調ケース１１のうち、ヒータコア１３の上側部分（熱交換コア部１３ａの前席用通路１６に対応する部分）を収容する前席用部分では車両左右方向の幅寸法を他の部分より所定量だけ小さくする。一方、空調ケース１１のうち、ヒータコア１３の下側部分（熱交換コア部１３ａの後席用通路１７に対応する部分）を収容する後席用部分では車両左右方向の幅寸法を上記前席用部分より所定量だけ拡大して、このケース拡大部分により後席用冷風バイパス通路１９を形成している。
【０１０５】
なお、上記のケース拡大部分の幅寸法は、空調ケース１１のうち、蒸発器１２の収容部分の幅寸法と同等であるから、蒸発器１２を通過した冷風は後席用冷風バイパス通路１９内へ直線的にスムースに流入する。
【０１０６】
なお、図５はヒータコア１３の配置部分（すなわち、温風が流れる部分）の断面図で、図６はヒータコア１３の左右外側の配置部分（すなわち、後席用冷風バイパス通路１９の配置部分）の断面図である。図５、６において、符号１９ａは空調ケース１１に一体成形され後席用冷風バイパス通路１９の上面部を区画する上面壁部を示している。
【０１０７】
第３実施形態によると、空調ケース１１の内部においてヒータコア１３の後席用通路１７からの温風４１が車両左右方向の中央部を流れ、後席用通路１７の左右外側に位置する後席用冷風バイパス通路１９からの冷風４２が温風４１の左右外側を流れる。
【０１０８】
従って、第３実施形態では、第１、第２実施形態の両ガイド４３、４３、４４、４４を使用せずに、冷風４２と温風４１を車両左右方向に並べた状態で、後席用フェイス開口部３８と後席用フット開口部３９に導入でき、構成を簡素化できる。
【０１０９】
但し、第３実施形態では、後席用冷風バイパス通路１９の配置場所の変更に伴って、後席用エアミックスドア２１を図８に示すようにヒータコア１３のコア部下側領域の後席用通路１７を開閉するための温風ドア２１０と後席用冷風バイパス通路１９を開閉するための冷風ドア２１１とを組み合わせた構成にしている。
【０１１０】
温風ドア２１０と冷風ドア２１１は回転軸２１ａの円周方向に対して所定の角度だけずらして回転軸２１ａに一体に連結され、回転軸２１ａと一体に回転する。温風ドア２１０は板形状の一端部が回転軸２１ａに連結される片持ち板ドアにより構成され、冷風ドア２１１は板形状の中央部が回転軸２１ａに連結されるバタフライドアにより構成されている。
【０１１１】
図５に示す温風ドア２１０の実線位置と図６に示す冷風ドア２１１の実線位置は最大暖房位置を示し、温風ドア２１０がヒータコア１３の後席用通路１７を全開し、冷風ドア２１１が後席用冷風バイパス通路１９を全閉する状態を示している。これに反し、図５に示す温風ドア２１０の破線位置と図６に示す冷風ドア２１１の破線位置は最大冷房位置を示し、温風ドア２１０がヒータコア１３の後席用通路１７を全閉し、冷風ドア２１１が後席用冷風バイパス通路１９を全開する状態を示している。
【０１１２】
このように、温風ドア２１０と冷風ドア２１１がヒータコア１３の後席用通路１７と後席用冷風バイパス通路１９を相反的に開閉することにより、後席側の冷風と温風の風量割合を調整して、後席側吹出空気温度を調整できる。
【０１１３】
（他の実施形態）
なお、第１実施形態において、各部のドア操作機構をいずれもサーボモータを用いたアクチュエータにより構成する場合について説明したが、各部のドア操作機構の一部または全部を必要に応じ、手動操作機構で構成してもよいことはもちろんである。
【０１１４】
また、上記の各実施形態では、空調ケース１１内部の車両左右方向の中央部に仕切り板４０を配置して、空調ケース１１の内部通路を車両左右方向の右側通路と左側通路とに仕切っているので、この空調ケース１１内部の右側通路と左側通路とに対応して後席用フェイス開口部３８と後席用フット開口部３９を左右に分割して設けているが、仕切り板４０を廃止して、空調ケース１１の内部通路を車両左右方向の右側通路と左側通路とに仕切らない単一通路とする空調装置に本発明を適用できることはもちろんである。
【０１１５】
この場合は前席用エアミックスドア２０および後席用エアミックスドア２１を左右に分割せずに１つずつ設ければよい。同様に、後席用フェイス開口部３８と後席用フット開口部３９も左右に分割せずに１つずつ設けるようにしてもよい。
【０１１６】
また、第３実施形態では、冷風バイパス通路１９をヒータコア１３の車両左右方向の左右両側（左右外側）に形成しているが、冷風バイパス通路１９をヒータコア１３の車両左右方向の左右両側のうちいずれか一方のみに形成するようにしてもよい。
【図面の簡単な説明】
【図１】本発明の第１実施形態による空調本体ユニットに吹出ダクトを接続した状態を示す概略断面図である。
【図２】図１の後席用吹出開口部付近の概略構成を示す透視斜視図である。
【図３】第２実施形態による空調本体ユニットに吹出ダクトを接続した状態を示す概略断面図である。
【図４】図３の後席用吹出開口部付近の概略構成を示す透視斜視図である。
【図５】第３実施形態による空調本体ユニットに吹出ダクトを接続した状態を示す概略断面図で、ヒータコア配置部の断面図である。
【図６】第３実施形態による空調本体ユニットに吹出ダクトを接続した状態を示す概略断面図で、ヒータコア側方の後席用冷風バイパス通路配置部の断面図である。
【図７】図５、図６の後席用吹出開口部付近の概略構成を示す透視斜視図である。
【図８】第３実施形態による後席用エアミックスドア単体の斜視図である。
【図９】従来技術による空調本体ユニットの断面図である。
【図１０】図９の従来技術の変形例による空調本体ユニットの断面図である。
【符号の説明】
１１…空調ケース、１３…ヒータコア（暖房用熱交換器）、
１３ａ…熱交換用コア部、１６…前席用通路、１７…後席用通路、
１８…前席用冷風バイパス通路、１９…後席用冷風バイパス通路、
２０…前席用エアミックスドア、２１…後席用エアミックスドア、
２８、３１、３４…前席用吹出開口部、３８…後席用フェイス開口部、
３９…後席用フット開口部、４３…冷風ガイド（ガイド手段）、
４４…温風ガイド（ガイド手段）、４５…後席用フェイスダクト、
４６…後席用フットダクト。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner that blows conditioned air toward a rear seat side of a vehicle interior using an air conditioning unit for a front seat, for improving the mixing of cold air and hot air in the rear seat side bi-level mode. Regarding improvements.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a vehicle air conditioner that blows conditioned air toward a rear seat side of a vehicle interior using a front seat air conditioning unit is known (see, for example, Patent Document 1).
[0003]
FIG. 9 shows this prior art. A heater core 13 that forms a heat exchanger for heating is disposed in the air conditioning case 11, and a front-seat cold air bypass passage 18 is provided above the heater core 13 in the air conditioning case 11. The rear seat cold air bypass passage 19 is formed below the heater core 13. Further, in the heat exchange part 13a of the heater core 13, a front seat passage 16 is formed in the upper region, and a rear seat warm air passage 17 is formed in the lower region of the heat exchange unit 13a.
[0004]
Then, the air volume ratio between the cold air passing through the front seat cold air bypass passage 18 and the warm air passing through the front seat passage 16 of the heater core 13 is adjusted by the front seat air mix door 20, and the front seat side in the vehicle interior Control the temperature of the air blown into. Further, the air volume ratio between the cool air passing through the rear seat cool air bypass passage 19 and the warm air passing through the rear seat passage 17 of the heater core 13 is adjusted by the rear seat air mix door 21 so that the rear seat side of the vehicle interior The temperature of the air blown into the air can be controlled independently.
[0005]
A rear seat air mixing unit 50 for mixing cold air and hot air is formed on the downstream side (rear side of the vehicle) of the rear seat air mix door 21. A rear-seat face opening 38 is disposed, a rear-seat foot opening 39 is disposed below the rear-seat face opening 38, and the rear-seat blowout openings 38, 39 are used for the rear seat. The outlet mode 51 is opened and closed to switch the outlet mode on the rear seat side. A rear seat face duct (not shown) is connected to the rear seat face opening 38, and a rear seat foot duct (not shown) is connected to the rear seat foot opening 36. Then, air-conditioning air is blown out from the rear seat face outlet at the rear seat face duct tip to the upper body side of the rear seat occupant, and from the rear seat foot outlet at the rear seat foot duct tip. Air-conditioning air is blown out to the feet.
[0006]
[Patent Document 1]
JP 2000-62442 A
[0007]
[Problems to be solved by the invention]
By the way, when the rear seat blowing mode door 51 is operated to an intermediate position 51 'indicated by a broken line, both the blowing openings 38 and 39 are opened simultaneously, and the rear seat blowing mode is set to the bi-level mode. When the rear seat air mix door 21 is operated to an intermediate position 21 ′ indicated by a broken line in the rear seat side bi-level mode, the warm air passing through the rear seat passage 17 of the heat exchanging portion 13a of the heater core 13 is indicated by an arrow a. In this way, the cold air passing through the upper side of the plate surfaces of the doors 21 and 51 mainly flows to the rear seat face opening 38 side and passes through the rear seat cold air bypass passage 19 on the lower side of the heater core 13. As shown by b, it passes below the plate surfaces of the doors 21 and 51 and flows mainly to the rear seat foot opening 36.
[0008]
As a result, the rear seat face blowing temperature is higher than the rear seat foot blowing temperature in the rear seat side bi-level mode. For this reason, troubles such as the face of the rear-seat occupant burning occur, and the air-conditioning feeling is deteriorated.
[0009]
Therefore, as shown in FIG. 10, the space between the rear seat air mixing door 21 and the rear seat blowing mode door 51 is expanded to increase the volume of the rear seat air mixing section 50, and this rear seat air mixing section A hot air guide 50a is arranged on the upper side of 50, and a cold air guide 50b is arranged on the lower side to guide the hot air downward as indicated by arrow c, and the cold air is guided upward as indicated by arrow d. Thus, the present inventors have examined that hot air and cold air collide oppositely in the opposite direction from 180 ° to improve the mixing property of the cold and hot air.
[0010]
According to this examination example, the mixing of cold and hot air can be improved, but on the other hand, the flow direction of the cold and warm air is suddenly greatly bent by the upper and lower guides 50a and 50b, and the cold and hot air collides. The pressure loss increases, and the amount of air blown to the rear seat side is reduced. Moreover, since the volume of the air mixing part 50 for rear seats is expanded, the physique of the air-conditioning case 11 will enlarge and vehicle mounting property will also deteriorate.
[0011]
The present invention has been made in view of the above points. In a vehicle air conditioner that uses a front seat air conditioning unit to adjust a rear seat side blowing temperature, an increase in the pressure loss of the rear seat air flow and an air conditioning case The purpose is to reduce the size of the physique and improve the air-conditioning feeling in the rear seat bi-level mode.
[0012]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, in the air conditioning case (11) disposed on the front seat side of the vehicle interior, the front seat outlet is provided on the downstream side of the air flow of the heating heat exchanger (13). An opening (28, 31, 34) and a rear seat blow opening (38, 39) are arranged, and air is blown out to the front seat side region in the vehicle compartment through the front seat blow opening (28, 31, 34). In addition, the rear seat ducts (45, 46) are connected to the rear seat outlet openings (38, 39), and air flows from the downstream end of the rear seat ducts (45, 46) to the rear seat side region of the vehicle interior. In the vehicle air conditioner that blows
  A rear-seat face opening (38) and a rear-seat foot opening (39) disposed adjacent to each other in the vehicle vertical direction as a rear-seat blowout opening;
  The rear seat face opening (38) and the rear seat foot opening (39) are such that the rear seat face opening (38) is on the upper side and the rear seat foot opening (39) is on the lower side. Are located next to each other,
  A rear seat face duct (45) connected to the rear seat face opening (38) as a rear seat duct, and a rear seat foot duct (46) connected to the rear seat foot opening (39) With
  A rear seat passage (17) is formed in the lower region of the heat exchanging core (13a) of the heating heat exchanger (13), and the heating heat is formed below the heating heat exchanger (13). Forming a cold air bypass passage (19) for the rear seat, where the cold air flows, bypassing the exchanger (13),
  The air volume ratio between the cool air passing through the rear-seat cold air bypass passage (19) and the warm air passing through the rear-seat passage (17) in the heating heat exchanger (13) is defined as the rear-seat air mix door (21). It is designed to adjust by
  In the air conditioning case (11), guide means (43, 44) for arranging the cool air from the cool air bypass passage for the rear seat (19) and the warm air from the rear seat passage (17) in the left-right direction of the vehicle are provided.
  Cold air and hot air are introduced into the rear seat face opening (38) and the rear seat foot opening (39) in a state where the vehicle is arranged in the left-right direction of the vehicle, and the cool air and warm air are introduced into the rear seat face duct (45) and It mixes in the foot duct (46) for backseats, It is characterized by the above-mentioned.
[0013]
According to this, even if the warm air passing through the rear seat passage (17) for the heating heat exchanger (13) flows above the cold air in the rear seat cold air bypass passage (19), And the cool air are changed by the guide means (43, 44) so as to be lined up in the left-right direction of the vehicle, to the rear-seat face opening (38) and the rear-seat foot opening (39) that are adjacently arranged vertically. Hot air and cold air can be introduced almost evenly. Then, the cold air and the hot air can be sufficiently mixed in the long rear seat face duct (45) and the rear seat foot duct (46).
[0014]
Therefore, in the rear-seat side bi-level mode, the conditioned air desired by the rear-seat occupant can be blown out from the downstream end of the rear-seat face duct (45) and the rear-seat foot duct (46). The air conditioning feeling in the rear seat side bi-level mode can be improved.
[0015]
Moreover, hot air and cold air are introduced into both the rear seat face opening (38) and the rear seat foot opening (39) in a state in which the vehicle is aligned in the lateral direction of the vehicle, and the rear seat duct has a long length. (45, 46) can be used effectively to mix cool and warm air, so there is no need to specially set an air mixing space in the air conditioning case (11) for mixing cool and warm air on the rear seat side. The case (11) can be reduced in size.
[0016]
Furthermore, since the mixing action of the cool / warm air itself is performed inside the rear seat ducts (45, 46), the guide means (43, 44) smoothly guides the flow direction of the cool / warm air to the center side or the outside in the lateral direction of the vehicle. There is no need to set a sharp bend in the flow direction of the cool and warm air as in the example of FIG.
[0017]
As a result, in claim 1, as compared with the example of FIG. 10, the increase in the pressure loss of the rear seat side flow path due to the installation of the guide means (43, 44) can be significantly reduced, and the amount of blown air to the rear seat side is reduced. Can be suppressed to a small amount.
[0018]
As in the second aspect of the present invention, in the first aspect, the guide means specifically includes a cold air guide means (43) for guiding the cold air toward the center of the vehicle in the left-right direction, and the hot air is more effective than the cold air. It can be constituted by warm air guide means (44) for guiding the vehicle in the lateral direction.
[0019]
Further, as in the invention described in claim 3, in claim 1, the guide means specifically includes a cold air guide means (43) for guiding the cold air to the outside in the left-right direction of the vehicle, and the hot air is more effective than the cold air. You may comprise by the warm air guide means (44) guided to the center part side of a vehicle left-right direction.
[0024]
In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
1 and 2 show a first embodiment. The front seat air conditioning unit of the vehicle air conditioner according to this embodiment is roughly divided into an air conditioning main unit 10 shown in FIG. 1 and the air conditioning main unit. 10 is divided into two parts, a blower unit (not shown) for blowing air.
[0026]
The blower unit is disposed in the instrument panel (not shown) in the front part of the vehicle interior and is offset from the center part to the passenger seat side. On the other hand, the air conditioning main unit 10 is provided in the instrument panel in the front part of the vehicle interior. (Not shown) It is arrange | positioned among the inner side in the approximate center part of the vehicle left-right (width) direction. The air conditioning body unit 10 is arranged in the mounting direction indicated by the arrows in FIGS. 1 and 2 with respect to the front and rear, the top and bottom, and the left and right directions of the vehicle inside the instrument panel.
[0027]
As is well known, the blower unit has an inside / outside air switching box for switching between outside air (outside air) and inside air (inside air), and a centrifugal blower for blowing air sucked through the inside / outside air switching box. Yes.
[0028]
The air conditioning main unit 10 has a resin air conditioning case 11 that constitutes an air passage that blows air toward the passenger compartment. The evaporator 12 and the heating heat exchanger that form a cooling heat exchanger in the air conditioning case 11. Both of the heater cores 13 forming the above are integrally incorporated. An air inlet space 14 is formed in a portion of the air conditioning case 11 closest to the vehicle front side. Air blown from the centrifugal blower of the blower unit flows into the air inlet space 14.
[0029]
In the air conditioning case 11, the evaporator 12 is disposed substantially vertically at a portion immediately after the air inlet space 14. As is well known, the evaporator 12 absorbs the latent heat of evaporation of the low-pressure refrigerant in the refrigeration cycle from the blown air to cool the blown air. And the heater core 13 is arrange | positioned at predetermined intervals in the air flow downstream (vehicle rear side) of the evaporator 12.
[0030]
The heater core 13 reheats the cold air that has passed through the evaporator 12, and hot water (engine cooling water) flows from a vehicle engine (not shown) into the heater core 13 and heats the air using this hot water as a heat source. It is. As is well known, the heater core 13 has a heat exchanging core portion 13a composed of a flat tube through which hot water passes and a corrugated fin joined thereto. An inlet tank 13b into which hot water flows is arranged at the lower part of the heat exchange core part 13a, and an outlet tank 13c from which hot water flows out is arranged at the upper part of the heat exchange core part 13a.
[0031]
The heater core 13 is inclined at a predetermined angle from the vertical direction so that the upper part (exit tank 13c side part) is located on the vehicle front side (evaporator 12 side) than the lower part (inlet tank 13b side part).
[0032]
A partition member 15 is disposed on the upstream side of the air flow of the heat exchange core portion 13a of the heater core 13, and the air of the heat exchange core portion 13a is formed by the partition member 15 and a switching door 37 (described later) located on the downstream side of the air flow. The passage is partitioned into an upper front seat passage 16 and a lower rear seat passage 17. The partition member 15 is disposed on the upstream side of the air flow of the heater core 13 so as to extend over the entire length of the air-conditioning case 11 in the left-right direction of the vehicle (the vertical direction in the drawing of FIG. 1), and serves as a rectifying member that rectifies the air flow. Doubles as The partition member 15 is configured by a plate-like member that is separate from the air-conditioning case 11 or a plate-like member that is integrally formed with the air-conditioning case 11.
[0033]
In the air passage in the air conditioning case 11, a front-seat cold-air bypass passage 18 and a rear-seat cold-air bypass passage 19 are formed in the upper part and the lower part of the heater core 13, respectively, to bypass the heater core 13 and flow air (cool air). Has been.
[0034]
Further, a front seat air mix door 20 and a rear seat air mix door 21 are respectively disposed between the evaporator 12 and the heater core 13. Here, the front seat air mix door 20 constitutes a front seat side temperature adjusting means for adjusting the temperature of the air blown to the front seat side of the vehicle interior, and in this example, a flexible film door is used. It is configured. Further, the rear seat air mix door 21 constitutes a rear seat side temperature adjusting means for adjusting the temperature of air blown to the rear seat side of the vehicle interior. In this example, the plate rotates around the rotary shaft 21a. It is composed of doors.
[0035]
More specifically, the film door constituting the air mixing door 20 for the front seat is made of a resinous film-like film member having flexibility and excellent strength like polyethylene resin. And the opening part (not shown) for allowing air to pass through is formed in the middle part of the moving direction (up-down direction) of a film door.
[0036]
On the other hand, in the air conditioning case 11, the first take-up shaft 22 is rotatably disposed at the upper end portion of the cold air bypass passage 18 for the front seat, and is partitioned on the upstream side of the heat exchange core portion 13 a of the heater core 13. A second winding shaft 23 is rotatably disposed on the member 15.
[0037]
And one end part of the film door which comprises the air mix door 20 for front seats is fixed to the 1st winding shaft 22, the other end part is fixed to the 2nd winding shaft 23, and the both ends of a film door are 1st. The second take-up shafts 22 and 23 can be wound up, and the first and second take-up shafts 22 and 23 can be rewound (sent out). Thereby, the air mixing door 20 for the front seat is used for heat exchange between the cold air bypass passage 18 for the front seat and the heater core 13 in a state where a constant tension is applied between the first and second winding shafts 22 and 23. The air conditioning case 11 can move in the vertical direction so as to cross the front seat passage 16 of the core portion 13a.
[0038]
A door operation mechanism (not shown) is connected to one of the first and second take-up shafts 22 and 23, and the first and second take-up shafts 22 and 23 are interlocked by this door operation mechanism. It is designed to rotate in both forward and reverse directions.
[0039]
By moving the front seat air mix door 20 in the vertical direction in the air conditioning case 11, the opening (not shown) of the front seat air mix door 20 can be moved to an arbitrary position. By adjusting the opening of each of the passages 16 and 18 by the movement of the opening, the air volume ratio between the warm air heated in the front seat passage 16 and the cold air passing through the front seat cold air bypass passage 18 Can be adjusted arbitrarily.
[0040]
In addition, an independent door operation mechanism (not shown) is also connected to the rotating shaft 21a of the rear seat air mix door 21, and the rear seat air mix door 21 is connected to the front seat air mix door 20 by this door operation mechanism. It is designed to rotate independently.
[0041]
The opening of the rear seat passage 17 and the rear seat cool air bypass passage 19 of the heat exchange core portion 13a of the heater core 13 is arbitrarily adjusted by the rotation of the rear seat air mix door 21, and the rear seat passage of the heater core 13 is adjusted. The air volume ratio between the hot air heated at 17 and the cold air passing through the rear-seat cold air bypass passage 19 can be arbitrarily adjusted.
[0042]
On the other hand, in the air-conditioning case 11, the front seat temperature heading upward immediately after the heater core 13 is located at the downstream side (vehicle rear side) of the front seat passage 16 of the heat exchange core portion 13 a of the heater core 13. An air passage 26 is formed. The downstream side (upper side) of the front-seat warm air passage 26 joins the downstream side of the front-seat cold air bypass passage 18 in the upper part of the heater core 13 to mix the cool air and the hot air. Is forming.
[0043]
A defroster opening 28 is opened above the front seat air mixing section 27 in the upper surface of the air conditioning case 11. A defroster duct 29 is connected to the defroster opening 28, a defroster outlet 29a is provided at the tip of the defroster duct 29, and conditioned air is blown out from the defroster outlet 29a toward the inner surface of the vehicle front window glass. The defroster opening 28 is opened and closed by a rotatable plate-like defroster door 30.
[0044]
On the upper surface of the air conditioning case 11, a front seat face opening 31 is provided at a location on the vehicle rear side (occupant side) with respect to the defroster opening 28. A front seat face duct 32 is connected to the front seat face opening 31, and a front seat face outlet 32 a is provided at the tip of the front seat face duct 32. The front seat face outlet 32a is arranged on the upper side of the instrument panel, and blows air-conditioned air toward the upper body side of the front seat occupant. The front seat face opening 31 is opened and closed by a rotatable plate-like front seat face door 33.
[0045]
Next, in the air conditioning case 11, a front seat foot opening 34 is provided below the front seat face opening 31. A foot duct 35 is connected to the front seat foot opening 34, and a front seat foot outlet 35a is provided at a lower end portion of the foot duct 35, and a foot portion of a front seat occupant is provided from the front seat foot outlet 35a. Blow out air-conditioned air toward The front seat foot opening 34 is opened and closed by a rotatable plate-like front seat foot door 36.
[0046]
The defroster door 30, the front seat face door 33, and the front seat foot door 36 are front seat blowing mode door means, and are connected to a common door operation mechanism via a link mechanism (not shown). Accordingly, the front-seat blow-out mode doors 30, 33, and 36 are operated in conjunction with each other by this common door operation mechanism.
[0047]
On the other hand, the switching door 37 described above is a plate door that can be rotated by a rotating shaft 37a, and is disposed in a lower portion of the heater core 13 on the downstream side (vehicle rear side). More specifically, the rotating shaft 37a of the switching door 37 is arranged in the extending direction of the partition position between the front seat passage 16 and the rear seat passage 17 at the downstream side of the heater core 13, and the switching door 37 is The heater core 13 rotates in a region facing the rear seat passage 17 at the downstream side of the air.
[0048]
Since the switching door 37 is operated in conjunction with the air mixing door 21 for the rear seat, one end portion of the rotating shaft 37a of the switching door 37 protrudes outside the air conditioning case 11, and via a link mechanism (not shown) It is connected to the operation mechanism of the rear seat air mix door 21 described above.
[0049]
When the rear seat air mix door 21 is operated to the maximum heating position indicated by the solid line in FIG. 1, the switching door 37 is operated to the solid line position in FIG. 1, and the switching door 37 is on the extension of the partition member 15. Positioned to partition the front seat passage 16 and the rear seat passage 17 of the heater core 13 and block communication between the rear seat passage 17 and the front seat hot air passage 26. Therefore, the solid line position in FIG. 1 is the “partition position” of the switching door 37.
[0050]
On the other hand, when the rear seat air mix door 21 is operated to the maximum cooling position indicated by the broken line in FIG. 1, the switching door 37 is operated to the broken line position in FIG. The communication with the openings 38 and 39 is blocked and the rear seat passage 17 is communicated with the front seat hot air passage 26. Accordingly, the broken line position in FIG. 1 is the “rear seat side shut position” of the switching door 37. The switching door 37 is continuously rotationally displaced between the “partition position” and the “rear seat side shut position” in conjunction with the change in the rotation angle of the rear seat air mix door 21.
[0051]
The rear-seat blowout openings 38 and 39 are disposed adjacent to each other in the vehicle vertical direction near the lower end of the air-conditioning case 11 on the vehicle rear side. Specifically, the rear seat outlet opening is a rear seat face opening 38 and a rear seat foot opening 39, and the rear seat face opening 38 is located on the upper side, and the rear seat foot opening The portion 39 is located below the rear seat face opening 38.
[0052]
In the present embodiment, as shown in FIG. 2, a partition plate 40 is disposed in the center of the air-conditioning case 11 in the left-right direction of the vehicle, and the internal passage of the air-conditioning case 11 is divided into a right-hand passage and a left-hand passage in the left-right direction of the vehicle. It is designed to partition. Therefore, the rear seat face opening 38 and the rear seat foot opening 39 are divided into left and right portions corresponding to the right passage and the left passage inside the air conditioning case 11.
[0053]
Both the rear seat face opening 38 and the rear seat foot opening 39 are formed on the downstream side (rear side of the vehicle) of the rear seat passage 17 of the heat exchange core portion 13a of the heater core 13 and on the rear seat cold air bypass passage 19. Hot air 41 (shaded arrow) from the rear seat passage 17 and cold air 42 (white arrow) from the rear seat cold air bypass passage 19 communicate with the downstream side (rear side of the vehicle), and the rear seat face opening 38. And introduced into the rear seat foot opening 39.
[0054]
At this time, in the present embodiment, as shown in FIG. 2, the hot air 41 and the cold air 42 are introduced into the hot air openings 37 and 38 in a state in which the hot air 41 and the cold air 42 are arranged in the vehicle left-right direction. Yes.
[0055]
In other words, in the present embodiment, the cold air guides 43 and 43 are disposed on the left and right side portions on the downstream side (the vehicle rear side) of the cold air bypass passage 19 for the rear seat. The distance between the left and right cold air guides 43 is maximized at the upstream end (front end of the vehicle) of the air flow, and is equal to the width dimension of the rear-seat cold air bypass passage 19 in the left-right direction of the vehicle.
[0056]
And the cold wind guides 43 and 43 are made into the shape curved smoothly so that the cold air guides 43 and 43 on either side may approach each other and the space | interval may mutually reduce as it goes to the downstream of an air flow.
[0057]
In other words, the left and right cold air guides 43, 43 have a curved shape that curves toward the center in the vehicle left-right direction as they go from the upstream side to the downstream side. Thereby, the cool air 42 from the cool air bypass passage 19 for the rear seat is guided to the central portion side inside the air conditioning case 11 along the curved shape of the cool air guides 43 and 43.
[0058]
On the other hand, on the downstream side (rear side of the vehicle) of the rear seat passage 17 of the heater core 13, the left and right hot air guides 44, 44 are arranged in a V shape in a region downstream of the rotational operation space of the switching door 37. . The left and right hot air guides 44 and 44 are constituted by flat plate members in this example, and the air flow upstream ends (vehicle front side end portions) of the hot air guides 44 and 44 are arranged in the air conditioning case 11 with respect to the left and right sides of the vehicle. It arrange | positions so that it may gather at one place of the center part of a direction. And as it goes to the downstream side of the air flow, the left and right hot air guides 44, 44 are extended outward in the left-right direction of the vehicle and gradually dropped downward.
[0059]
The downstream ends of the left and right hot air guides 44, 44 are arranged on the upper end surface of the downstream portion of the left and right cold air guides 43, 43 or on the outer left and right sides of the upper end surface. As a result, the hot air 41 from the rear seat passage 17 is guided to the outside in the left-right direction of the vehicle along the surfaces of the left and right hot air guides 44, 44, and introduced into the left and right outer regions of the cold air guides 43, 43. .
[0060]
As described above, in the rear seat face opening 38 and the rear seat foot opening 39, the cold air 42 flows to a portion closer to the center (inner side) in the left-right direction of the vehicle, and the left and right cold-air guides 43, 43 in the left-right direction of the vehicle. The warm air 41 flows to the outside.
[0061]
The cold air guides 43 and 43 and the hot air guides 44 and 44 can be integrally formed with the air conditioning case 11 by resin molding. However, in order to simplify the shape of the air conditioning case 11, the cold air guides 43 and 43 and the hot air guides 44 and 44 are separately formed separately from the air conditioning case 11. 43 and the hot air guides 44 and 44 may be fixed to the air conditioning case 11 by means such as adhesion.
[0062]
The upstream end of the rear seat face duct 45 is fitted and connected to the peripheral edge of the rear seat face opening 38. Similarly, the upstream end of the rear seat foot duct 46 is fitted and connected to the peripheral edge of the rear seat foot opening 39. The downstream ends of the rear seat face duct 45 and the rear seat foot duct 46 are disposed in the rear seat side region of the vehicle interior, and the downstream end of the rear seat face duct 45 is conditioned air toward the upper body side of the rear seat occupant. Is provided with a rear-seat face outlet 45a. In addition, a rear seat foot outlet 46a is provided at the downstream end of the rear seat foot duct 46 to blow conditioned air toward the feet of the rear seat occupant.
[0063]
As shown in FIG. 1, a rear seat face door 38 a is rotatably arranged inside the rear seat face opening 38, and the rear seat foot door 39 a is rotatable inside the rear seat foot opening 39. It is arranged. Here, since the rear seat face opening 38 and the rear seat foot opening 39 are divided into left and right parts, the rear seat face door 38a and the rear seat foot door 39a are also divided into right and left parts. The
[0064]
In this example, the rear seat face door 38a and the rear seat foot door 39a are constituted by butterfly doors having a rotating shaft disposed at the center of the plate door, and open and close the openings 38 and 39, respectively. Further, the rotational axes of the four doors 38a and 39a in total are connected to a common rear-seat blow-out mode operation mechanism and are operated in conjunction with each other. Each of the rear seat blowing mode operation mechanism and the various other door operation mechanisms described above is configured by an actuator using a servo motor.
[0065]
In the present embodiment, as described above, the air passage inside the air conditioning case 11 is partitioned by the partition plate 40 into the right side passage and the left side passage in the left-right direction of the vehicle, and thus corresponds to the right side passage and the left side passage. The front-seat air mix door 20, the rear-seat air mix door 21, the front-seat blowout openings 28, 31, and 34 are also divided into left and right parts. The left and right front seat air mix doors 20 and the left and right rear seat air mix doors 21 are provided with independent operation mechanisms, respectively, so that the temperature of the air blown to the left and right sides of the front seat side and the rear seat side of the vehicle interior is independent of each other. Can be controlled.
[0066]
Next, the operation of this embodiment in the above configuration will be described. First, the case where the face mode is set as the blowing mode on the front seat side and the rear seat side will be described. On the front seat side, only the front seat face opening 31 is opened by the front seat face door 33, and the defroster opening is opened. The portion 28 and the front seat foot opening 34 are closed by doors 30 and 36. On the rear seat side, the rear seat face opening 38 is opened by the rear seat face door 38a, and the rear seat foot opening 39 is closed by the rear seat foot door 39a.
[0067]
And the opening part of the film door which comprises the air mixing door 20 for front seats overlaps with the cool air bypass passage 18 for front seats completely, and the film air_passage | passage passage 18 for front seats is fully opened, and the film | membrane part of a film door is a heater core When the front seat air mix door 20 is moved to a position where the thirteen front seat passages 16 are fully closed, the front seat side is in a maximum cooling state.
[0068]
When the rear seat air mix door 21 is rotated to the position indicated by the broken line in FIG. 1, the rear seat passage 17 of the heater core 13 is fully closed and the rear seat cold air bypass passage 19 is fully opened. It becomes a cooling state. Further, in conjunction with the operation of the rear seat air mix door 21 to the maximum cooling position, the switching door 37 is connected to the rear seat passage 17 and the rear seat outlet as shown by the broken line in FIG. It is operated to the “rear seat shut position” that blocks communication with the openings 38 and 39 side.
[0069]
In this state, when the blower and the refrigeration cycle of the blower unit are operated, the blown air from the blower unit flows into the front air inlet space 14 of the air conditioning case 11 and is then cooled by the evaporator 12 to become cold air. .
[0070]
In the maximum cooling state, this cold air passes through the front seat face duct 32 via the front seat cold air bypass passage 18, the front seat air mixing section 27 and the front seat face opening 31, and the front seat face outlet Cold wind blows from 32a toward the upper body of the front seat occupant.
[0071]
At the same time, the cold air passes through the rear-seat cold-air bypass passage 19 and passes through the rear-seat face opening 38 and the rear-seat face duct 45, and passes from the rear-seat face outlet 45a to the upper body of the rear-seat occupant. Cold wind blows out.
[0072]
When the front seat air mix door 20 is moved downward in FIG. 1, the opening portion of the film door constituting the front seat air mix door 20 also moves downward, and the front seat cold air bypass passage 18 and the heater core 13 are moved. Therefore, both the front-seat cold-air bypass passage 18 and the front-seat passage 16 of the heater core 13 are opened at a predetermined opening degree.
[0073]
When the rear seat air mix door 21 is rotated from the broken line position to the solid line position in FIG. 1, both the rear seat cold air bypass passage 19 and the heater core 13 rear seat passage 17 are opened at a predetermined opening. . The switching door 37 is rotated in conjunction with the rotating operation of the rear seat air mix door 21 and is rotationally displaced by a predetermined angle from the “rear seat shut position” indicated by the broken line to the “partition position” indicated by the solid line.
[0074]
Therefore, on both the front seat side and the rear seat side, it is possible to blow out the conditioned air at a desired temperature adjusted by the air volume ratio between the cold air and the hot air toward the passenger's upper body side in the passenger compartment. Then, by independently controlling the operation positions of the air mixing door 20 for the front seat and the air mixing door 21 for the rear seat, it is possible to independently control the temperature of the air blown into the passenger compartment on the front seat side and the rear seat side.
[0075]
Next, the case where the foot mode is set on both the front seat side and the rear seat side will be described. In the foot mode, the front seat face opening 31 is fully closed by the front seat face door 33, and the defroster opening 28. Is opened by a small opening by the defroster door 30, and the front seat foot opening 34 is opened by the front seat foot door 36 in a fully opened state. On the other hand, on the rear seat side, the rear seat face opening 38 is closed by the rear seat face door 38a, and the rear seat foot opening 39 is opened by the rear seat foot door 39a.
[0076]
And the opening part of the film door which comprises the air seat door 20 for front seats overlaps with the front-seat channel | path 16 of the heater core 13 completely, and the film | membrane part of a film door is the front seat. When the front seat air mix door 20 is moved to the position where the cold air bypass passage 18 is fully closed, the front seat side is in the maximum heating state. Further, when the rear seat air mix door 21 is rotated to the solid line position in FIG. 1 to fully close the rear seat cool air bypass passage 19 and fully open the rear seat passage 17 of the heater core 13, the rear seat side is also heated to the maximum. It becomes a state.
[0077]
The switching door 37 is operated to the “partition position” indicated by the solid line in conjunction with the rotation operation of the rear seat air mix door 21 to the maximum heating state, and the front seat passage 16 of the heater core 13 and the rear seat The passage 17 is partitioned.
[0078]
In the maximum heating state, the entire amount of blown air from the blower unit flows into the heat exchange core 13a of the heater core 13 and is heated. Most of the warm air heated in the front seat passage 16 of the heater core 13 passes through the front seat warm air passage 26, the front seat air mixing section 27, and the foot opening 34, and the foot outlet 35 a of the foot duct 35. Blow out toward the feet of the front passenger. Further, a part of the warm air heated in the front seat passage 16 of the heater core 13 branches from the front seat air mixing section 27 to the defroster opening section 28 side to the vehicle window glass from the defroster outlet 29a of the defroster duct 29. Blow out.
[0079]
Even in the foot mode, by independently controlling the operation positions of the air mixing door 20 for the front seat and the air mixing door 21 for the rear seat, the temperature of the air blown into the passenger compartment on the front seat side and the rear seat side is independently controlled. Of course you can.
[0080]
Next, the case where the defroster mode is set as the front seat side blowing mode will be described. In the defroster mode, the front seat face opening 31 and the front seat foot opening 34 are the front seat face door 33 and the front seat foot door. The defroster opening 28 is opened by the defroster door 30 in the fully opened state.
[0081]
In conjunction with the defroster mode setting, a control signal is output from the air conditioning control device (not shown) to the actuator of the operation mechanism of the rear seat air mix door 21, and the rear seat air mix door 21 is indicated by a solid line. While maintaining the heating position, the switching door 37 is operated to the “rear seat side shut position” indicated by a broken line. Thereby, the communication between the rear seat passage 17 and the rear seat outlet openings 38 and 39 of the heater core 13 is blocked, and the rear seat passage 17 is communicated with the front seat hot air passage 26.
[0082]
Thus, the entire amount of warm air that has passed through both the front seat passage 16 and the rear seat passage 17 of the heater core 13 can flow into the defroster opening 28 through the front seat warm air passage 26. Therefore, the amount of air blown out to the rear seat side can be reduced to zero, and the amount of air blown out from the defroster can be increased to the maximum, and the anti-fogging performance of the vehicle window glass can be effectively exhibited.
[0083]
Even in the defroster mode, the operation position of the front seat air mix door 20 can be freely adjusted, so that the defroster blown air temperature can be arbitrarily adjusted by adjusting the operation position of the front seat air mix door 20.
[0084]
As the blowing mode on the front seat side, the face mode, the foot mode, and the defroster mode have been described. In addition, (1) the front seat side opening 31 and the front seat foot opening 34 that simultaneously open the front seat opening Bi-level mode, rear-seat face opening 38 and rear-seat foot opening 39 simultaneously opening the rear-seat side bi-level mode, and (2) increasing the opening of the defroster opening 28 compared to the foot mode. At the same time, by reducing the opening degree of the front seat foot opening 34, it is possible to set the front seat foot defroster mode in which the defroster blown air volume and the foot blown air volume are approximately the same.
[0085]
Next, the mixing action of the cool / warm air in the rear seat side bi-level mode will be described in detail. In the bi-level mode on the rear seat side, both the rear seat face opening 38 and the rear seat foot opening 39 are opened by the rear seat face door 38a and the rear seat foot door 39a. Since the bi-level mode is normally used in the middle temperature period of spring and autumn, the rear seat air mix door 21 is operated to an intermediate position between the maximum heating position indicated by the solid line and the maximum cooling position indicated by the broken line. In conjunction with this, the switching door 37 is also operated to an intermediate position between a “partition position” indicated by a solid line and a “rear seat shut position” indicated by a broken line.
[0086]
Thereby, after passing through the evaporator 12, a part of the cool air blown to the rear seat side passes through the rear seat passage 17 of the heater core 13 to become the warm air 41, and the warm air 41 is formed in both openings for the rear seat. It flows toward 38 and 39. At the same time, the remaining portion of the cool air blown toward the rear seat flows through the rear seat cool air bypass passage 19 and flows toward the rear seat openings 38 and 39 as indicated by an arrow 42.
[0087]
By the way, in the present embodiment, the left and right side portions on the downstream side (rear side of the vehicle) of the cool air bypass passage 19 for the rear seat smoothly curve toward the central portion side in the vehicle left-right direction as going from the upstream side to the downstream side of the air flow. Since the cool air guides 43 and 43 are arranged, the cool air 42 from the cool air bypass passage 19 for the rear seats is located in the center of the air conditioning case 11 along the curved shape of the cool air guides 43 and 43 as shown in FIG. Guided to.
[0088]
On the other hand, on the downstream side (rear side of the vehicle) of the rear seat passage 17 of the heater core 13, the left and right hot air guides 44, 44 that extend outward in the left-right direction of the vehicle and hang downward as they go to the downstream side of the air flow. It is arranged in a letter shape. The downstream ends of the left and right hot air guides 44, 44 are arranged on the upper end surface of the downstream portion of the left and right cold air guides 43, 43, as shown in FIG.
[0089]
As a result, the hot air 41 from the rear seat passage 17 is guided to the outside in the left-right direction of the vehicle along the surfaces of the left and right hot air guides 44, 44 as shown in FIG. Introduced in the area.
[0090]
As described above, in the rear seat face opening 38 and the rear seat foot opening 39, the cold air 42 flows to a portion closer to the center (inner side) in the vehicle left-right direction, and the left and right cold air guides 43, 43 in the vehicle left-right direction. The warm air 41 flows to the outside. Accordingly, the hot air 41 and the cold air 42 are introduced almost equally into the rear seat openings 38 and 39 in a state where the hot air 41 and the cold air 42 are arranged in the left-right direction of the vehicle. 38 and 39 do not flow in a biased manner.
[0091]
The rear seat ducts 45, 46 are connected to the rear seat openings 45, 39 because the rear seat ducts 45, 46 extending from the front seat side to the rear seat side are connected to the rear seat openings 38, 39. The cool and warm air can be sufficiently mixed while the cool and warm air passes through. Therefore, it is possible to blow out the conditioned air at an appropriate temperature desired by the rear seat occupant from the rear seat face opening 38 and the rear seat foot opening 39 simultaneously to the upper body side and the foot side of the rear seat occupant. Air conditioning feeling in the bi-level mode can be improved.
[0092]
Moreover, the hot air 41 and the cold air 42 are introduced into both the rear seat face opening 38 and the rear seat foot opening 39 in a state where they are aligned in the left-right direction of the vehicle, and the rear seat duct 45 having a long length, 46 can effectively mix cold and hot air, so there is no need to specially set an air mixing space for mixing cold and hot air on the rear seat side on the air conditioning case 11 side of the air conditioning main body unit 10 for the front seat. The air conditioning case 11 of the front seat air conditioning main unit 10 can be reduced in size.
[0093]
Further, the cold air guides 43 and 43 according to the present embodiment smoothly guide the cold air 42 toward the center in the vehicle left-right direction, and the hot air guides 44 and 44 smoothly move the hot air 41 outward in the vehicle left-right direction. Since the guide is used, the pressure loss of the rear seat side flow path does not increase significantly as in the example of FIG. 10 described above.
[0094]
That is, in the example of FIG. 10 described above, the flow direction of the cool / warm air is rapidly increased as indicated by arrows c and d by the warm air guide 50a and the cool air guide 50b arranged on both upper and lower sides of the rear seat air mixing unit 50. Since it is bent and the hot air and the cold air collide oppositely, the pressure loss of the rear seat side flow path inevitably increases, and the amount of air blown to the rear seat side is reduced. On the other hand, in the present embodiment, the mixing action itself of the cool / warm air is performed inside the rear seat ducts 45 and 46, so that both guides 43, 43, 44, and 44 have the flow direction of the cool / warm air in the center in the vehicle left-right direction. It is only necessary to guide smoothly to the side or the outside, and it is not necessary to set a sharp bend in the flow direction of the cold / hot air as in the example of FIG.
[0095]
As a result, in this embodiment, compared to the example of FIG. 10, an increase in the pressure loss of the rear seat side flow path due to the installation of both guides 43, 43, 44, 44 can be significantly reduced, and the amount of air blown to the rear seat side Can be reduced to a small amount.
[0096]
In the present embodiment, as described above, the air passage inside the air conditioning case 11 is partitioned into the right side passage and the left side passage in the left-right direction of the vehicle by the partition plate 40, and the front seats correspond to the right side passage and the left side passage. Because the air mix door 20 for the rear seat, the air mix door 21 for the rear seat, the blowout openings 28, 31, 34 for the front seat, the blowout openings 38, 39 for the rear seat are also divided into left and right, By operating the air mix door 20 for the seat and the air mix door 21 for the left and right rear seats independently, the temperature of the air blown to the left and right of the front seat side and the rear seat side of the vehicle interior can be controlled independently. That is, in this embodiment, the temperature of the blown air to the four areas of front, rear, left and right in the vehicle interior can be controlled independently.
[0097]
(Second Embodiment)
In the first embodiment, the cold air guides 43 and 43 guide the cold air 42 toward the center in the vehicle left-right direction, and the hot air guides 44 and 44 guide the hot air 41 outward in the vehicle left-right direction. In the second embodiment, on the contrary, the cold air guides 43 and 43 guide the cold air 42 to the outside in the left-right direction of the vehicle, and the hot air guides 44 and 44 guide the hot air 41 toward the center in the left-right direction of the vehicle. .
[0098]
3 and 4 show the second embodiment. In the second embodiment, the cold air guides 43 and 43 are formed in a V shape like the hot air guides 44 and 44 of the first embodiment, and the rear The cool air 42 in the seat cool air bypass passage 19 is guided to the outside in the left-right direction of the vehicle by the cool air guides 43, 43.
[0099]
Further, the hot air guides 44 and 44 are curved like the cold air guides 43 and 43 of the first embodiment so as to bend toward the center in the vehicle lateral direction from the upstream side to the downstream side. Thereby, the warm air 41 can be guided to the central portion side in the vehicle left-right direction by the warm air guides 44, 44.
[0100]
Here, the hot air guides 44, 44 are located above the cold air guides 43, 43 up to the downstream end portion of the cold air guides 43, 43. And in the site | part further downstream (vehicle rear side) of the cold air guides 43 and 43 downstream of the cold air guides 43 and 43 among the hot air guides 44 and 44, the bottom part (namely, bottom part of the air-conditioning case 11) of the cold air guides 43 and 43. The lower end portions of the hot air guides 44 and 44 are suspended. Accordingly, in the hot air guides 44, 44, the guide height dimension is enlarged at a portion further downstream than the downstream end portion of the cold air guides 43, 43.
[0101]
In the height dimension enlarged portion on the downstream side of the hot air guides 44, 44, the hot air 41 flows on the inner side (center side) of the hot air guides 44, 44, and the cold air 42 on the left and right outer sides of the hot air guides 44, 44. Flows.
[0102]
Also in the second embodiment, the hot air 41 and the cold air 42 are arranged in the left-right direction of the vehicle, and are introduced into both the rear seat face opening 38 and the rear seat foot opening 39 substantially evenly. The same effect as 1 embodiment can be exhibited.
[0103]
(Third embodiment)
In the first and second embodiments, the cool air bypass passage 19 for the rear seat is formed below the heater core 13, and the cold air 42 from the cool air bypass passage 19 for the rear seat is cooled by the cool air guides 43, 43 in the vehicle lateral direction center. The warm air 41 from the rear seat passage 17 of the heater core 13 is guided to the outside or the center of the vehicle in the left-right direction by the warm air guides 44, 44. The rear seat face opening 38 and the rear seat foot opening 39 are introduced in the state where they are arranged in the vehicle left-right direction. In the third embodiment, the cold air guides 43 and 43 and the hot air guides 44 and 44 are provided. Without use, the cool air 42 and the warm air 41 are introduced into the rear seat face opening 38 and the rear seat foot opening 39 in a state where the cold air 42 and the hot air 41 are arranged in the vehicle left-right direction.
[0104]
5 to 8 show a third embodiment, in which the rear-seat cold-air bypass passage 19 is formed not on the lower side of the heater core 13 but on both the left and right sides (left and right outer sides) of the heater core 13 in the left-right direction of the vehicle. . That is, the width dimension of the heater core 13 in the left-right direction of the vehicle is made smaller than the width dimension of the evaporator 12 in the left-right direction of the vehicle by a predetermined amount, whereby the upper portion of the air-conditioning case 11 of the heater core 13 (of the heat exchange core portion 13a). In the front seat portion that accommodates the portion corresponding to the front seat passage 16, the width dimension in the left-right direction of the vehicle is made smaller by a predetermined amount than the other portions. On the other hand, in the air-conditioning case 11, the width dimension in the vehicle left-right direction is set for the front seat in the rear seat portion that houses the lower portion of the heater core 13 (the portion corresponding to the rear seat passage 17 of the heat exchange core portion 13a). The case is enlarged by a predetermined amount, and the rear-seat cold air bypass passage 19 is formed by the case enlarged portion.
[0105]
In addition, since the width dimension of said case expansion part is equivalent to the width dimension of the accommodating part of the evaporator 12 among the air-conditioning cases 11, the cold wind which passed the evaporator 12 goes into the cool wind bypass passage 19 for rear seats. It flows smoothly in a straight line.
[0106]
5 is a cross-sectional view of the heater core 13 arrangement portion (that is, the portion through which the warm air flows), and FIG. 6 is an arrangement portion on the left and right outer sides of the heater core 13 (that is, the arrangement portion of the cool air bypass passage 19 for the rear seat). It is sectional drawing. 5 and 6, reference numeral 19 a denotes an upper wall portion that is integrally formed with the air conditioning case 11 and that defines the upper surface portion of the rear-seat cold air bypass passage 19.
[0107]
According to the third embodiment, the warm air 41 from the rear seat passage 17 of the heater core 13 flows through the center in the left-right direction of the vehicle inside the air conditioning case 11 and is located on the left and right outer sides of the rear seat passage 17. The cold air 42 from the cold air bypass passage 19 flows on the left and right outer sides of the hot air 41.
[0108]
Therefore, in the third embodiment, without using the guides 43, 43, 44, 44 of the first and second embodiments, the cold air 42 and the hot air 41 are arranged in the left-right direction of the vehicle. It can be introduced into the face opening 38 and the rear seat foot opening 39, and the configuration can be simplified.
[0109]
However, in the third embodiment, the rear seat air mix door 21 is arranged in the lower region of the core portion of the heater core 13 as shown in FIG. The hot air door 210 for opening and closing the door 17 and the cold air door 211 for opening and closing the rear seat cold air bypass passage 19 are combined.
[0110]
The hot air door 210 and the cold air door 211 are integrally connected to the rotating shaft 21a while being shifted by a predetermined angle with respect to the circumferential direction of the rotating shaft 21a, and rotate integrally with the rotating shaft 21a. The hot air door 210 is constituted by a cantilever plate door whose one end is shaped like a plate and connected to the rotary shaft 21a, and the cold air door 211 is made up of a butterfly door whose central portion is connected to the rotary shaft 21a. .
[0111]
The solid line position of the hot air door 210 shown in FIG. 5 and the solid line position of the cold air door 211 shown in FIG. 6 indicate the maximum heating position, and the hot air door 210 fully opens the rear seat passage 17 of the heater core 13. A state in which the rear-seat cold air bypass passage 19 is fully closed is shown. On the contrary, the broken line position of the hot air door 210 shown in FIG. 5 and the broken line position of the cold air door 211 shown in FIG. 6 indicate the maximum cooling position, and the hot air door 210 fully closes the rear seat passage 17 of the heater core 13. The cold air door 211 shows a state where the cold air bypass passage 19 for the rear seat is fully opened.
[0112]
In this way, the hot air door 210 and the cold air door 211 open and close the rear seat passage 17 and the rear seat cold air bypass passage 19 in the heater core 13 in a reciprocal manner, thereby reducing the air volume ratio between the rear seat side cold air and the hot air. The rear seat side air temperature can be adjusted.
[0113]
(Other embodiments)
In the first embodiment, the case where each part of the door operation mechanism is configured by an actuator using a servo motor has been described. However, a part or all of the door operation mechanism of each part may be manually operated as necessary. Of course, it may be configured.
[0114]
Further, in each of the above-described embodiments, the partition plate 40 is disposed in the center of the air-conditioning case 11 in the left-right direction of the vehicle, and the internal passage of the air-conditioning case 11 is divided into a right-side passage and a left-side passage in the left-right direction of the vehicle. Therefore, the rear seat face opening 38 and the rear seat foot opening 39 are divided into left and right parts corresponding to the right passage and left passage inside the air conditioning case 11, but the partition plate 40 is eliminated. Of course, the present invention can be applied to an air conditioner in which the internal passage of the air conditioning case 11 is a single passage that is not divided into a right passage and a left passage in the left-right direction of the vehicle.
[0115]
In this case, the front seat air mix door 20 and the rear seat air mix door 21 may be provided one by one without being divided into left and right. Similarly, the rear seat face opening 38 and the rear seat foot opening 39 may be provided one by one without being divided into left and right.
[0116]
In the third embodiment, the cold air bypass passage 19 is formed on both the left and right sides (left and right outer sides) of the heater core 13 in the left-right direction of the vehicle. You may make it form only in either.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing a state in which a blowout duct is connected to an air conditioning main unit according to a first embodiment of the present invention.
2 is a transparent perspective view showing a schematic configuration in the vicinity of a rear seat outlet opening of FIG. 1; FIG.
FIG. 3 is a schematic cross-sectional view showing a state in which a blowing duct is connected to an air conditioning main unit according to a second embodiment.
4 is a see-through perspective view showing a schematic configuration in the vicinity of the rear seat outlet opening of FIG. 3; FIG.
FIG. 5 is a schematic cross-sectional view showing a state where a blowout duct is connected to an air conditioning main unit according to a third embodiment, and is a cross-sectional view of a heater core arrangement portion.
FIG. 6 is a schematic cross-sectional view showing a state in which a blowout duct is connected to an air conditioning main unit according to a third embodiment, and is a cross-sectional view of a cool air bypass passage arrangement for a rear seat on the side of a heater core.
7 is a perspective view showing a schematic configuration in the vicinity of the rear seat outlet opening of FIGS. 5 and 6. FIG.
FIG. 8 is a perspective view of a rear seat air mix door according to a third embodiment.
FIG. 9 is a cross-sectional view of an air conditioning main unit according to the prior art.
10 is a cross-sectional view of an air conditioning main unit according to a modification of the prior art of FIG.
[Explanation of symbols]
11 ... Air conditioning case, 13 ... Heater core (heat exchanger for heating),
13a ... heat exchange core, 16 ... front seat passage, 17 ... rear seat passage,
18 ... Cool air bypass passage for front seats, 19 ... Cool air bypass passage for rear seats,
20 ... Air mix door for front seats, 21 ... Air mix door for rear seats,
28, 31, 34 ... front seat outlet opening, 38 ... rear seat face opening,
39 ... Foot opening for rear seat, 43 ... Cold air guide (guide means),
44 ... Warm air guide (guide means), 45 ... Rear duct face duct,
46 ... Foot duct for rear seats.

Claims (3)

車室内前席側に配置される空調ケース（１１）内に、空気を加熱する暖房用熱交換器（１３）を備え、
前記空調ケース（１１）において前記暖房用熱交換器（１３）の空気流れ下流側に前席用吹出開口部（２８、３１、３４）および後席用吹出開口部（３８、３９）を配置し、
前記前席用吹出開口部（２８、３１、３４）を通して車室内の前席側領域に空気を吹き出すとともに、前記後席用吹出開口部（３８、３９）に後席用ダクト（４５、４６）を接続し、前記後席用ダクト（４５、４６）の下流端部から車室内の後席側領域に空気を吹き出す車両用空調装置において、
前記後席用吹出開口部として車両上下方向に隣接配置される後席用フェイス開口部（３８）と後席用フット開口部（３９）とを備え、
前記後席用フェイス開口部（３８）と前記後席用フット開口部（３９）は、前記後席用フェイス開口部（３８）が上側で、前記後席用フット開口部（３９）が下側となるように隣接配置されており、
前記後席用ダクトとして前記後席用フェイス開口部（３８）に接続される後席用フェイスダクト（４５）と前記後席用フット開口部（３９）に接続される後席用フットダクト（４６）とを備え、
前記暖房用熱交換器（１３）の熱交換用コア部（１３ａ）のうち下側領域に後席用通路（１７）を形成するとともに、前記暖房用熱交換器（１３）の下側に前記暖房用熱交換器（１３）をバイパスして冷風が流れる後席用冷風バイパス通路（１９）を形成し、
前記後席用冷風バイパス通路（１９）を通過する冷風と、前記暖房用熱交換器（１３）の後席用通路（１７）を通過する温風との風量割合を後席用エアミックスドア（２１）により調整するようになっており、
前記後席用冷風バイパス通路（１９）からの冷風と前記後席用通路（１７）からの温風とを車両左右方向に並べるガイド手段（４３、４４）を前記空調ケース（１１）内に設け、
前記冷風と前記温風を車両左右方向に並べた状態で前記後席用フェイス開口部（３８）および前記後席用フット開口部（３９）に導入し、前記冷風と前記温風を前記後席用フェイスダクト（４５）および前記後席用フットダクト（４６）内で混合することを特徴とする車両用空調装置。In the air conditioning case (11) arranged on the front seat side of the passenger compartment, a heating heat exchanger (13) for heating air is provided,
In the air conditioning case (11), a front seat outlet opening (28, 31, 34) and a rear seat outlet opening (38, 39) are arranged on the downstream side of the air flow of the heating heat exchanger (13). ,
Air is blown out to the front seat side region in the passenger compartment through the front seat outlet opening (28, 31, 34), and the rear seat duct (45, 46) is inserted into the rear seat outlet opening (38, 39). In the vehicle air conditioner for blowing air from the downstream end of the rear seat duct (45, 46) to the rear seat side region of the vehicle compartment,
A rear seat face opening (38) and a rear seat foot opening (39) disposed adjacent to each other in the vehicle vertical direction as the rear seat outlet opening;
The rear seat face opening (38) and the rear seat foot opening (39) are such that the rear seat face opening (38) is on the upper side and the rear seat foot opening (39) is on the lower side. Are arranged adjacent to each other,
The rear seat face duct (45) connected to the rear seat face opening (38) as the rear seat duct and the rear seat foot duct (46) connected to the rear seat foot opening (39). )
A rear seat passage (17) is formed in the lower region of the heat exchange core portion (13a) of the heating heat exchanger (13), and the heating heat exchanger (13) has the lower portion thereof. Forming a cold air bypass passage (19) for the rear seat, where the cold air flows, bypassing the heating heat exchanger (13),
The air volume ratio between the cool air passing through the rear-seat cold air bypass passage (19) and the warm air passing through the rear-seat passage (17) in the heating heat exchanger (13) is expressed as a rear-seat air mix door ( 21) to adjust,
Guide means (43, 44) for arranging cold air from the cold air bypass passage (19) for the rear seat and warm air from the passage (17) for the rear seat in the left-right direction of the vehicle is provided in the air conditioning case (11). ,
The cold air and the hot air are introduced into the rear seat face opening (38) and the rear seat foot opening (39) in a state where the cold air and the hot air are arranged in the left-right direction of the vehicle, and the cold air and the hot air are introduced into the rear seat. A vehicle air conditioner that mixes in the face duct (45) and the rear seat foot duct (46). 前記ガイド手段として、前記冷風を車両左右方向の中央部側にガイドする冷風ガイド手段（４３）と、前記温風を前記冷風よりも車両左右方向の外側にガイドする温風ガイド手段（４４）とを備えることを特徴とする請求項１に記載の車両用空調装置。  As the guide means, cold air guide means (43) for guiding the cold air toward the center in the vehicle left-right direction, and hot air guide means (44) for guiding the warm air to the outside in the vehicle left-right direction with respect to the cold air; The vehicle air conditioner according to claim 1, comprising: 前記ガイド手段として、前記冷風を車両左右方向の外側にガイドする冷風ガイド手段（４３）と、前記温風を前記冷風よりも車両左右方向の中央部側にガイドする温風ガイド手段（４４）とを備えることを特徴とする請求項１に記載の車両用空調装置。  As the guide means, a cold air guide means (43) for guiding the cold air to the outside in the left-right direction of the vehicle, and a hot air guide means (44) for guiding the warm air to the center side of the vehicle in the left-right direction of the vehicle. The vehicle air conditioner according to claim 1, comprising:
JP2003020463A 2003-01-29 2003-01-29 Air conditioner for vehicles Expired - Fee Related JP4123947B2 (en)

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DE200410004303 DE102004004303A1 (en) 2003-01-29 2004-01-28 Vehicle's air conditioning system has ducting device provided in housing of air conditioner for guiding of warm air flowing from rear air duct and cold air flowing from rear auxiliary passage

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JP5128977B2 (en) * 2008-02-07 2013-01-23 カルソニックカンセイ株式会社 Air conditioner for automobile
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