JP4306102B2

JP4306102B2 - Air conditioner for vehicles

Info

Publication number: JP4306102B2
Application number: JP2000228742A
Authority: JP
Inventors: 好則一志; 雅彦菅谷
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2000-07-28
Filing date: 2000-07-28
Publication date: 2009-07-29
Anticipated expiration: 2020-07-28
Also published as: JP2002036846A

Description

【０００１】
【発明の属する技術分野】
本発明は、車両用空調装置のウォームアップ制御に関するもので、特に車両用空調装置のウォームアップ初期のウインドウ防曇制御に係わる。
【０００２】
【従来の技術】
従来より、エバポレータに付着した水分が近傍のヒータコアに暖められて蒸発することによる湿気を含んだ空気が、ウォームアップ初期にデフロスタ（ＤＥＦ）吹出口からウインドウへ吹き出され、フロントウインドウの内面に曇りを起こすのを防止する目的で、車両に搭載されたエンジンを再始動して暖房運転を開始した際に、エンジンの冷却水温が所定値以下の時は、送風機の作動を停止し、且つ内外気モードを外気導入モードに設定し、且つ吹出口モードをＤＥＦモードに設定すると共に、コンプレッサを所定時間が経過するまで作動させることで、空調ダクト内の除湿を行って、フロントウインドウの内面に曇りが起きることを防止するウォームアップ初期のウインドウ防曇制御を実施するようにした車両用空調装置が公知である（特許第２７６９０７３号）。
【０００３】
【発明が解決しようとする課題】
ところが、従来のウォームアップ初期のウインドウ防曇制御では、エンジンの再始動直後に車両を走行させると、送風機の作動を停止していても、ラム圧により外気吸込口より車室外空気が空調ダクト内に流入する。そして、空調ダクト内の除湿が終わる前の湿気を含んだ空気が、ＤＥＦ吹出口からフロントウインドウの内面へ吹き出されてしまい、フロントウインドウの内面に曇りが起きてしまうという問題点があった。
【０００４】
【発明の目的】
本発明の目的は、車両駆動手段を再始動した直後に車両を走行させた場合でも、ラム圧により湿気を含んだ空気がウインドウへ吹き出されることを抑えることにより、ウインドウに曇りが起きるのを防止することのできる車両用空調装置を提供することにある。
【０００５】
【課題を解決するための手段】
請求項１に記載の発明によれば、車両駆動手段の作動開始時または作動開始後に、ウインドウへの吹出風量または吹出割合の少ない吹出口モードへ切り替えると共に、所定条件を満足するまで、例えば所定時間が経過するまで、冷却または除湿手段を作動させるか、あるいは強く作動させ、且つ空調ダクト内への車室外空気の吸込割合を少なくすることにより、車両駆動手段を再始動した直後に車両を走行させた場合でも、外気吸込口に加わるラム圧が抑えられると共に、空調ダクト内より湿気を取り除くことができる。それによって、吹出口から湿気を含んだ空気がウインドウへ吹き出されることを抑えることができるので、ウインドウに曇りが起きるのを防止することができる。
【０００６】
請求項２、請求項６、請求項１０および請求項１４に記載の発明によれば、空調または送風の開始前、あるいは空調または送風の作動時に、ウインドウへの吹出風量または吹出割合の少ない吹出口モードへ切り替えると共に、所定条件を満足するまで、あるいは所定時間が経過するまで、冷却または除湿手段を作動させるか、あるいは強く作動させることにより、車両駆動手段を再始動した直後に車両を走行させた場合でも、空調ダクト内より湿気を取り除くことができる。それによって、請求項１に記載の発明と同様な効果を達成することができる。
請求項３、請求項７、請求項１１および請求項１５に記載の発明によれば、車両駆動手段の作動開始時または作動開始後に、ウインドウへの吹出風量または吹出割合の少ない吹出口モードへ切り替えると共に、所定条件を満足するまで、あるいは所定時間が経過するまで、冷却または除湿手段を作動させるか、あるいは強く作動させることにより、車両駆動手段を再始動した直後に車両を走行させた場合でも、空調ダクト内より湿気を取り除くことができる。それによって、請求項１に記載の発明と同様な効果を達成することができる。
【０００７】
請求項４、請求項８、請求項１２および請求項１６に記載の発明によれば、車両駆動手段の作動開始時または作動開始後に、所定条件を満足するまでの間、送風機の作動を停止または非常に低風量にし、且つ所定条件を満足するまでの間、あるいは所定時間が経過するまでの間、冷却または除湿手段を作動させるか、あるいは強く作動させると共に、ウインドウへの吹出風量または吹出割合を最大以外とする吹出口モードへ切り替えることにより、車両駆動手段を再始動した直後に車両を走行させた場合でも、空調ダクト内より湿気を取り除いてから送風機の作動を開始することができる。それによって、請求項１に記載の発明と同様な効果を達成することができる。
【０００９】
請求項５、請求項９、請求項１３および請求項１７に記載の発明によれば、車両駆動手段の作動開始時または作動開始後に、所定条件を満足するまでの間、あるいは所定時間が経過するまでの間、冷却または除湿手段を作動させるか、あるいは強く作動させると共に、所定時間が経過するまで、空調ダクト内への車室外空気の吸込割合を少なくすることにより、車両駆動手段を再始動した直後に車両を走行させた場合でも、外気吸込口に加わるラム圧が抑えられると共に、空調ダクト内より湿気を取り除くことができる。それによって、請求項１に記載の発明と同様な効果を達成することができる。
【００１３】
請求項２ないし請求項５に記載の発明によれば、冷却または除湿手段を作動させるか、あるいは強く作動させる所定時間は、車両駆動手段の冷却水温、車室内温度、日射量、ウインドウ温度、ウインドウ透過度、ウインドウ透過面積、シート温度、ステアリング温度、加熱用熱交換器温度、冷却用熱交換器温度、冷却用熱交換器付近温度のうちの１つ以上が所定値以上、あるいは湿度、ウインドウ曇り面積のうちの１つ以上が所定値以下の時に、少なくするか、あるいは０にすることが望ましい。
【００１４】
請求項６ないし請求項９に記載の発明によれば、冷却または除湿手段を作動させるか、あるいは強く作動させる所定時間は、車両駆動手段の冷却手段温度、車室内温度、日射量、ウインドウ温度、ウインドウ透過度、ウインドウ透過面積、シート温度、ステアリング温度、加熱用熱交換器温度、冷却用熱交換器温度、冷却用熱交換器付近温度のうちの１つ以上が高い程、あるいは湿度、ウインドウ曇り面積のうちの１つ以上が低い程、少なくすることが望ましい。
【００１５】
請求項１０ないし請求項１３に記載の発明によれば、冷却または除湿手段の作動を停止または弱くする所定条件とは、車両駆動手段の冷却水温、車室内温度、日射量、ウインドウ温度、ウインドウ透過度、ウインドウ透過面積、シート温度、ステアリング温度、加熱用熱交換器温度、冷却用熱交換器温度、冷却用熱交換器付近温度のうちの１つ以上が所定値以上となるか、あるいは湿度、ウインドウ曇り面積のうちの１つ以上が所定値以下となることである。
【００１６】
請求項１４ないし請求項１７に記載の発明によれば、冷却または除湿手段の作動を停止または弱くする所定条件とは、車両駆動手段の冷却水温、車室内温度、日射量、ウインドウ温度、ウインドウ透過度、ウインドウ透過面積、シート温度、ステアリング温度、加熱用熱交換器温度、冷却用熱交換器温度、冷却用熱交換器付近温度のうちの１つ以上が所定量以上上がるか、あるいは湿度、ウインドウ曇り面積のうちの１つ以上が所定量以上下がることである。
【００１８】
【発明の実施の形態】
〔実施形態の構成〕
図１ないし図８は本発明の実施形態を示したもので、図１はＡ／Ｃユニットの全体構成を示した図で、図２は車両のダッシュパネルを示した図で、図３はエアコン操作パネルを示した図である。
【００１９】
本実施形態の車両用空調装置は、車両走行用の水冷式エンジンを搭載する自動車等の車両の車室内を空調する空調ユニット（以下Ａ／Ｃユニットと言う）１における各空調機器のアクチュエータを、空調制御装置（制御回路基板：以下エアコンＥＣＵと言う）１０によって制御するように構成されている。そのＡ／Ｃユニット１は、車室内右側（以下運転席側と言う）空調ゾーンと車室内左側（以下助手席側と言う）空調ゾーンとの温度調節および吹出口モードの変更を互いに独立して行うことが可能なエアコンユニットである。
【００２０】
Ａ／Ｃユニット１は、車両の車室内の前方に配置された空調ダクト２を備えている。この空調ダクト２の上流側には、内外気切替ドア３およびブロワ４が設けられている。内外気切替ドア３は、サーボモータ５等のアクチュエータにより駆動されて内気吸込口６と外気吸込口７との開度（所謂吸込口モード）を変更することで、空調ダクト２内への車室外空気（以下外気と言う）と車室内空気（以下内気と言う）との吸込割合を調節する吸込割合調節手段である。ここで、本実施形態では、後記するエアコン操作パネル５１に設けられた内外気切替スイッチ５３を操作することで、内気の吸込割合が１００％で、外気の吸込割合が０％の内気循環（ＲＥＣ）モード、外気の吸込割合が１００％で、内気の吸込割合が０％の外気導入モード、内気の吸込割合よりも外気の吸込割合の方が多い内外気導入（ＦＲＳ）モード等の吸込口モードに切り替わる。
【００２１】
ブロワ４は、本発明の送風機に相当するもので、ブロワ駆動回路８により制御されるブロワモータ９により回転駆動されて空調ダクト２内において車室内に向かう空気流を発生させる遠心式送風機である。なお、ブロワ駆動回路８よりブロワモータ９等のアクチュエータに印加されるブロワ制御電圧（出力ブロワレベル）が高い程、ブロワ４の風量（ブロワ風量）が大きくなる。
【００２２】
空調ダクト２の中央部には、空調ダクト２内を通過する空気を冷却するエバポレータ（冷却用熱交換器）４１が設けられている。また、そのエバポレータ４１の下流側には、第１、第２空気通路１１、１２を通過する空気を加熱するヒータコア（加熱用熱交換器）４２が設けられている。ここで、本実施形態のヒータコア４２は、水冷式エンジン（車両駆動手段）のエンジン冷却水が循環する冷却水回路中にラジエータと並列して設置されている。
【００２３】
なお、第１空気通路１１および第２空気通路１２は仕切り板１４により区画されている。そのヒータコア４２の下流側には、車室内の運転席側空調ゾーンと助手席側空調ゾーンとの温度調節を互いに独立して行うための運転席側、助手席側エアミックス（Ａ／Ｍ）ドア１５、１６が設けられている。そして、運転席側、助手席側Ａ／Ｍドア１５、１６は、サーボモータ１７、１８等のアクチュエータにより駆動されて、運転席側、助手席側空調ゾーンに向けて吹き出す空気の吹出温度を調節する。
【００２４】
ここで、本実施形態のエバポレータ４１は、冷凍サイクルの一構成部品を成すものである。冷凍サイクルは、本発明の冷却または空調手段に相当するもので、車両のエンジンルーム内に搭載された車両走行用のエンジンの出力軸にベルト駆動されて、冷媒を圧縮して吐出する冷媒圧縮機（コンプレッサ）と、このコンプレッサから吐出された冷媒を凝縮液化させる冷媒凝縮器（コンデンサ）と、このコンデンサから流入した液冷媒を気液分離する受液器（レシーバ）と、このレシーバから流入した液冷媒を断熱膨張させる膨張弁と、この膨張弁から流入した気液二相状態の冷媒を蒸発気化させる上記のエバポレータ（冷媒蒸発器）４１とから構成されている。なお、コンデンサには、電動式のコンデンサファンによって冷却風が送風される。
【００２５】
これらのうちコンプレッサは、エアコンＥＣＵ１０により制御される電磁クラッチによって、エンジンからの回転動力が断続される。そして、電磁クラッチがＯＮされてコンプレッサが起動することによってエバポレータ４１が空調ダクト２内を通過する空気を冷却し除湿する。また、本実施形態では、エバ後温度センサ７４の検出値であるエバ後温度（ＴＥ）と目標エバ後温度（ＴＥＯ）との比較結果に応じて出力される制御信号に基づき容量可変制御を行う電磁式容量制御弁を有する容量可変型コンプレッサが用いられている。
【００２６】
そして、第１空気通路１１の空気下流側に連通する各吹出ダクトの空気下流端（ダッシュパネル５０の前面）では、図１および図２に示したように、フロントウインドウの内面に向けて空調風を吹き出すためのデフロスタ（ＤＥＦ）吹出口２０と、運転席側の乗員の頭胸部やサイドウインドウの内面に向けて空調風を吹き出すためのセンターフェイス（ＦＡＣＥ）吹出口２１およびサイドフェイス（ＦＡＣＥ）吹出口２２と、運転席側の乗員の足元部に向けて空調風を吹き出すためのフット（ＦＯＯＴ）吹出口２３とが開口している。なお、ＤＥＦ吹出口２０からは、運転席側のフロントウインドウの内面だけでなく、助手席側のフロントウインドウの内面に向けても空調風が吹き出される。
【００２７】
また、第２空気通路１２の空気下流側に連通する各吹出ダクトの空気下流端（ダッシュパネル５０の前面）では、助手席側の乗員の頭胸部やサイドウインドウの内面に向けて空調風を吹き出すためのセンターフェイス（ＦＡＣＥ）吹出口３１およびサイドフェイス（ＦＡＣＥ）吹出口３２と、助手席側の乗員の足元部に向けて空調風を吹き出すためのフット（ＦＯＯＴ）吹出口３３とが開口している。なお、ＦＡＣＥ吹出口２１、２２およびＦＡＣＥ吹出口３１、３２を形成するセンターグリルおよびサイドグリルには、各吹出口から吹き出す空調風の吹出方向を変更することが可能な複数のスイングルーバがそれぞれ取り付けられている。
【００２８】
そして、第１、第２空気通路１１、１２内には、運転席側空調ゾーンと助手席側空調ゾーンとの吹出口モードの設定を互いに独立して行うための運転席側、助手席側吹出口切替ドア２４〜２６、３５、３６が設けられている。そして、運転席側、助手席側吹出口切替ドア２４〜２６、３５、３６は、サーボモータ２８、２９、３９等のアクチュエータにより駆動されて、吹出口モードを、運転席側空調ゾーンと助手席側空調ゾーンとでそれぞれ切り替えることが可能な吹出口モード切替手段である。ここで、本実施形態の吹出口モードとしては、ＦＡＣＥモード、Ｂ／Ｌモード、ＤＥＦ洩れ無しＦＯＯＴモード、Ｆ／Ｄモード、ＤＥＦモード等がある。なお、ＦＯＯＴモードを、Ｆ／ＤモードよりもＤＥＦ吹出口２０より吹き出す空調風の吹出割合が少ないＤＥＦ洩れ有りＦＯＯＴモードとしても良い。
【００２９】
エアコンＥＣＵ１０は、本発明の空調制御手段に相当するもので、エンジンの始動および停止を司るイグニッションスイッチが投入（ＩＧ・ＯＦＦ→ＯＮ）された時に、車両に搭載された車載電源であるバッテリ（図示せず）から直流電源が供給されると演算処理や制御処理を開始するように構成されている。エアコンＥＣＵ１０には、図１および図３に示したように、ダッシュパネル５０の前面に一体的に設置されたエアコン操作パネル５１上の各種スイッチからの各スイッチ信号が入力される。
【００３０】
そして、エアコン操作パネル５１には、液晶表示装置（ディスプレイ）５２、内外気切替スイッチ５３、フロントデフロスタスイッチ（以下ＤＥＦスイッチと言う）５４、リヤデフロスタ（デフォッガ）スイッチ５５、ＤＵＡＬスイッチ５６、吹出口モード（ＭＯＤＥ）切替スイッチ５７、ブロワ風量切替スイッチ５８、ＡＵＴＯスイッチ６０、ＯＦＦスイッチ６１、Ａ／Ｃスイッチ５９、運転席（ＤＲＩＶＥＲ）側温度設定スイッチ６２および助手席（ＰＡＳＳＥＮＧＥＲ）側温度設定スイッチ６３等が設置されている。
【００３１】
上記のうちのＤＵＡＬスイッチ５６は、運転席側空調ゾーン内の温度調節と助手席側空調ゾーン内の温度調節とを互いに独立して行う左右独立温度コントロールを指令する左右独立制御指令手段である。また、ＭＯＤＥ切替スイッチ５７は、乗員の操作に応じて、吹出口モードをＦＡＣＥモード、Ｂ／Ｌモード、ＦＯＯＴモードまたはＦ／Ｄモードに切り替える。
【００３２】
そして、ディスプレイ５２には、運転席側の設定温度、助手席側の設定温度、吹出口モードおよびブロワ風量等が表示される。そして、運転席側温度設定スイッチ６２は、運転席側空調ゾーン内の温度を希望温度に設定する運転席側温度設定手段で、アップスイッチ６２ａとダウンスイッチ６２ｂよりなる。また、助手席側温度設定スイッチ６３は、助手席側空調ゾーン内の温度を希望温度に設定する助手席側温度設定手段で、アップスイッチ６３ａとダウンスイッチ６３ｂよりなる。なお、エアコン操作パネル５１上の各種の操作スイッチは、ディスプレイ５２上に設けられていても良い。
【００３３】
また、エアコンＥＣＵ１０の内部には、ＣＰＵ、メモリ（ＲＯＭまたはＥＥＰＲＯＭ、ＲＡＭ）、Ｉ／Ｏポート（入力／出力回路）およびタイマー回路等の機能を含んで構成される周知のマイクロコンピュータが設けられ、各種センサからのセンサ信号が入力回路によってＡ／Ｄ変換された後に、マイクロコンピュータに入力されるように構成されている。
【００３４】
すなわち、エアコンＥＣＵ１０の入力回路には、車室内温度（内気温とも言う）を検出する内気温検出手段としての内気温センサ７１、車室外温度（以下外気温と言う）を検出する外気温検出手段としての外気温センサ７２、および運転席側、助手席側空調ゾーン内に照射される日射量（日射強度）を検出する日射検出手段としての日射センサ７３等が接続されている。
【００３５】
また、エアコンＥＣＵ１０の入力回路には、エバポレータ４１を通過した直後の空気温度（以下エバ後温度と言う）を検出するエバ後温度検出手段としてのエバ後温度センサ７４、エンジン冷却水（車両駆動手段の冷却手段）の温度を検出する冷却水温検出手段としての冷却水温センサ７５等が接続されている。さらに、エアコンＥＣＵ１０の入力回路には、運転席側、助手席側空調ゾーンに吹き出す空調風の吹出温度をそれぞれ検出する運転席側、助手席側の吹出温度センサ（ダクトセンサ）７６、７７が接続されている。
【００３６】
これらのうち内気温センサ７１、外気温センサ７２、エバ後温度センサ７４および冷却水温センサ７５には、例えばサーミスタ等の温度センサが使用されている。ここで、本実施形態の内気温センサ７１は、ＦＡＣＥ吹出口２１近傍のダッシュパネル５０の前面に形成された凹所内に収容されている。なお、その凹所は、通気口が形成された蓋体５０ａによって塞がれている。また、日射センサ７３は、車室内の最前方の助手席側フロントウインドウ近傍のダッシュパネル５０の上側に設置されている。
【００３７】
〔実施形態の制御方法〕
次に、本実施形態のエアコンＥＣＵ１０による空調制御方法を、図１ないし図８に基づいて説明する。ここで、図４はエアコンＥＣＵ１０の制御プログラムの一例を示したフローチャートである。
【００３８】
先ず、イグニッションスイッチがＯＮされてエアコンＥＣＵ１０に直流電源が供給されると、予めＲＯＭに記憶されている制御プログラム（図４のルーチン）の実行が開始される。このとき、先ず、エアコンＥＣＵ１０内部のマイクロコンピュータに内蔵されたデータ処理用メモリ（ＲＡＭ）の記憶内容等の初期化を行う（ステップＳ１）。
【００３９】
次に、各種データをデータ処理用メモリ（ＲＡＭ）に読み込む。すなわち、各種操作スイッチからのスイッチ信号や各種センサからのセンサ信号を入力する（ステップＳ２）。
【００４０】
特に、エバ後温度センサ７４の検出値であるエバ後温度（ＴＥ）、冷却水温センサ７５の検出値であるエンジン冷却水温（ＴＷ）等を入力してデータ処理用メモリに記憶する。
【００４１】
次に、上記のような記憶データおよび下記の数１の算出式および数２の算出式に基づいて、運転席側の目標吹出温度ＴＡＯ（Ｄｒ）、および助手席側の目標吹出温度ＴＡＯ（Ｐａ）を演算する（目標吹出温度決定手段：ステップＳ３）。ここで、運転席側、助手席側の目標吹出温度ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）は、少なくとも車室内温度と車室内の設定温度の温度偏差を含んで算出される車室内温度の関数である。
【００４２】
【数１】

【数２】

【００４３】
但し、ＴＳＥＴ（Ｄｒ）、ＴＳＥＴ（Ｐａ）は、それぞれ運転席側空調ゾーンの設定温度、助手席側空調ゾーンの設定温度を表し、ＴＲ、ＴＡＭは、それぞれ車室内温度、外気温を表し、ＴＳ（Ｄｒ）、ＴＳ（Ｐａ）は、それぞれ運転席側、助手席側空調ゾーン内に照射される日射量を表す。ＫＳＥＴ、ＫＲ、ＫＡＭ、ＫＳ、Ｋｄ（Ｄｒ）およびＫｄ（Ｐａ）は、それぞれ温度設定ゲイン、車室内温度ゲイン、外気温ゲイン、日射量ゲイン、運転席側、助手席側空調ゾーンの温度差補正ゲインを表す。
【００４４】
なお、Ｋａ（Ｄｒ）、Ｋａ（Ｐａ）は、それぞれ外気温ＴＡＭが運転席側空調ゾーンおよび助手席側空調ゾーンの各空調温度に及ぼす影響度合を補正するゲインを表し、ＣＤ（Ｄｒ）、ＣＤ（Ｐａ）は上記影響度合に応じた定数、Ｃは補正定数を表す。ここで、Ｋａ（Ｄｒ）、Ｋａ（Ｐａ）、ＣＤ（Ｄｒ）、ＣＤ（Ｐａ）といった値は、車両の形や大きさ、Ａ／Ｃユニット１の各吹出口からの吹出方向等様々なパラメータで変化する。
【００４５】
次に、上記のステップＳ３で求めた運転席側、助手席側の目標吹出温度ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）に基づいて、オートブロワ風量を演算する（ステップＳ４）。具体的には、上記のオートブロワ風量｛ブロワ制御電圧ＶＡ｝は、目標吹出温度ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）にそれぞれ適合したブロワ制御電圧ＶＡ（Ｄｒ）、ＶＡ（Ｐａ）を図５の特性図に基づいて求めると共に、それらのブロワ制御電圧ＶＡ（Ｄｒ）、ＶＡ（Ｐａ）を平均化処理することにより得ている。
【００４６】
次に、上記のステップＳ３で求めた運転席側、助手席側の目標吹出温度ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）と、図６の特性図に示した目標吹出温度に対する吹出口モード特性とに基づいて運転席側、助手席側空調ゾーンの各吹出口モードを決定する（ステップＳ５）。具体的には、吹出口モードの決定においては、上記の目標吹出温度ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）が低い温度から高い温度にかけて、ＦＡＣＥモード、Ｂ／ＬモードおよびＦＯＯＴモードとなるように決定されている。
【００４７】
また、エアコン操作パネル５１に設けられたＭＯＤＥ切替スイッチ５７を操作することにより、ＦＡＣＥモード、Ｂ／Ｌモード、ＦＯＯＴモードおよびＦ／Ｄモードのうちいずれかの吹出口モードに固定される。また、エアコン操作パネル５１に設けられたＤＥＦスイッチ５４を押すとＤＥＦモードに固定される。
【００４８】
なお、上記のＦＡＣＥモードとは、空調風を乗員の上半身（頭胸部）に向けて吹き出す吹出口モードである。また、Ｂ／Ｌモードとは、空調風を乗員の上半身（頭胸部）および足元部に向けて吹き出す吹出口モードである。そして、ＦＯＯＴモードとは、空調風を乗員の足元部に向けて吹き出す吹出口モードである。さらに、Ｆ／Ｄモードとは、空調風を乗員の足元部および車両のフロントウインドウの内面に向けて吹き出す吹出口モードである。また、ＤＥＦモードとは、空調風を車両のフロントウインドウの内面に向けて吹き出す吹出口モードである。
【００４９】
次に、運転席側Ａ／Ｍドア１５の目標Ａ／Ｍ開度ＳＷ（Ｄｒ）（％）および助手席側Ａ／Ｍドア１６の目標Ａ／Ｍ開度ＳＷ（Ｐａ）（％）を演算する（ステップＳ６）。なお、このような目標Ａ／Ｍ開度ＳＷ（Ｄｒ）および目標Ａ／Ｍ開度ＳＷ（Ｐａ）の演算は、下記の数３の算出式および数４の算出式とに基づいて行われる。
【００５０】
【数３】

【数４】

但し、ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）は、それぞれ運転席側、助手席側の目標吹出温度を表し、ＴＥは、エバ後温度センサ７４の検出値であるエバ後温度を表し、ＴＷは、冷却水温センサ７５の検出値であるエンジン冷却水温を表す。
【００５１】
次に、図７、図８のルーチンが起動して、ウォームアップ初期のウインドウ防曇制御を行う（ステップＳ７）。次に、ステップＳ４またはステップＳ７で決定されたブロワ制御電圧（＝出力ブロワレベル）となるようにブロワ駆動回路８に出力信号を送る（ステップＳ８）。
【００５２】
次に、ステップＳ６で決定された目標Ａ／Ｍ開度ＳＷ（Ｄｒ）、ＳＷ（Ｐａ）となるようにサーボモータ１７、１８を通電制御する（ステップＳ９）。次に、ステップＳ５で決定された吹出口モードとなるようにサーボモータ２８、２９、３９を通電制御する（ステップＳ１０）。その後に、ステップＳ２の処理に戻る。
【００５３】
次に、本実施形態のエアコンＥＣＵ１０によるウォームアップ初期のウインドウ防曇制御を図７および図８に基づいて説明する。ここで、図７および図８はエアコンＥＣＵ１０によるウォームアップ初期のウインドウ防曇制御を示すフローチャートである。
【００５４】
先ず、図７のルーチンが起動すると、冷却水温センサ７５の検出値であるエンジン冷却水温（ＴＷ）が所定値（例えば６０℃）未満であるか否かを判定する（ステップＳ２１）。この判定結果がＹＥＳの場合、すなわち、エンジン冷却水温（ＴＷ）が６０℃未満であれば、ウォームアップ初期のウインドウ防曇制御を実施する必要があるため、ステップＳ２２の制御処理に進む。
【００５５】
また、ステップＳ２１の判定結果がＮＯの場合には、図７および図８のルーチンを抜ける。すなわち、エンジン冷却水温（ＴＷ）が６０℃以上であれば、瞬時にフロントウインドウの内面の曇りを晴らすことができると判断して、ウォームアップ初期のウインドウ防曇制御を実施しない。
【００５６】
一方、ステップＳ２１の判定結果がＹＥＳの場合には、先ず、ウインドウ防曇制御を実施する制御時間Ｔｘ（ｓｅｃ）を決定する（ステップＳ２２）。ここで、空調ダクト２内の湿度は、エバポレータ４１に付着した水分が、近くに設置されたヒータコア４２に流入するエンジン冷却水によって暖められて水分が蒸発する時間が長い程、高くなる。
【００５７】
このため、前回のイグニッションスイッチＩＧ・ＯＮ→ＯＦＦからの経過時間、つまりエンジンを停止してからエンジンを再始動するまでの経過時間Ｔ（ｍｉｎ）が長い程、ウォームアップ初期のウインドウ防曇制御を実施する制御時間Ｔｘ（ｓｅｃ）を長く設定することが望ましい。
【００５８】
次に、エンジンを再始動してから、ステップＳ２２で演算したウインドウ防曇制御を実施する制御時間Ｔｘ（ｓｅｃ）が経過するまでの間、吹出口モードを強制的にＦＯＯＴモードに切り替える（ステップＳ２３）。ここで、ＦＯＯＴモードは、ＤＥＦ吹出口２０よりフロントウインドウの内面への吹出割合が少ない吹出口モードである。
【００５９】
次に、図８のルーチンが起動して、エンジンを再始動してから、ステップＳ２２で演算したウインドウ防曇制御を実施する制御時間Ｔｘ（ｓｅｃ）が経過するまでの間、強制的に冷凍サイクルのコンプレッサとコンデンサファンをＯＮする（ステップＳ２４）。
【００６０】
次に、エンジンを再始動してから、ステップＳ２２で演算したウインドウ防曇制御を実施する制御時間Ｔｘ（ｓｅｃ）が経過するまでの間、ブロワ４をＯＦＦする。そして、制御時間Ｔｘ（ｓｅｃ）が経過してから制御時間Ｔｘ＋６（ｓｅｃ）までの間、乗員への違和感をなくすため、ブロワ風量ｆｘを徐々にリニアに増加し、通常の風量制御に戻すようにする（ステップＳ２５）。
【００６１】
次に、図４のフローチャートのステップＳ４で決定したオートブロワ風量と、ステップＳ２５で決定したウインドウ防曇制御中のブロワ風量ｆｘとを比較して、小さい方を出力ブロワレベル（ブロワ制御電圧）とし、ステップＳ８の出力制御に利用する（ステップＳ２６）。その後に、図７および図８のルーチンを抜ける。
【００６２】
〔実施形態の効果〕
以上のように、本実施形態のＡ／Ｃユニット１においては、エンジンを再始動してから制御時間Ｔｘ（ｓｅｃ）が経過するまでの間、吹出口モードを強制的にＦＯＯＴモードに切り替える。これにより、エンジンを再始動した直後に車両を走行させると、外気吸込口７に加わるラム圧によって外気が空調ダクト２内に流入し、空調ダクト２内の湿気がフロントウインドウへ吹き出される可能性があるが、ＦＯＯＴモードのため、運転席側吹出口切替ドア２４によってＤＥＦ吹出口２０が閉じられて、運転席側、助手席側吹出口切替ドア２６、３６によってＦＯＯＴ吹出口２３、３３が開かれる。このため、乗員の顔に比べて比較的に鈍感な乗員の足元へ湿気を含んだ風を逃がすことで、空調ダクト２内の湿気がフロントウインドウの内面へ吹き出されるのを防止することができる。
【００６３】
また、エンジンを再始動してから制御時間Ｔｘ（ｓｅｃ）が経過するまでの間、コンプレッサとコンデンサファンを強制的にＯＮすると共に、ブロワ４をＯＦＦすることにより、エバポレータ４１の温度を下げて、空調ダクト２内の湿気をエバポレータ４１の表面に結露させることによって、車室内への送風を開始する前に空調ダクト２内を確実に除湿することができる。
【００６４】
それによって、湿気を含んだ空気がＤＥＦ吹出口２０からフロントウインドウの内面へ吹き出すことはなく、ブロワ４の作動を開始した後は、湿気の少ない空気がヒータコア４２を通過する際に再加熱され、高温の空調風が吹出口から車室内へ吹き出す。例えば制御時間Ｔｘ（ｓｅｃ）が経過した後に、吹出口モードがＦ／ＤモードまたはＤＥＦモードに切り替えられると、ＤＥＦ吹出口２０からフロントウインドウの内面へ高温の空調風が吹き出すことにより、フロントウインドウの内面の防曇または曇りを晴らすことができる。
【００６５】
また、エンジン冷却水温（ＴＷ）が６０℃以上の場合には、空調ダクト２内の湿度の上昇はまだ小さく、また、多少フロントウインドウの内面が曇ったとしても、例えばＤＥＦ吹出口２０から吹き出される吹出風の吹出温度が高温のため、瞬時にフロントウインドウの内面の防曇または曇りを晴らすことができる。
【００６６】
〔他の実施形態〕
本実施形態では、図７のルーチンのステップＳ２１において、エンジン冷却水温（ＴＷ）が所定値（例えば６０℃）未満であるか否かを判定するようにしているが、その他加熱用熱交換器（ヒータコア４２）の温度など、ＤＥＦ吹出口２０からフロントウインドウの内面へ吹き出される吹出風の吹出温度が推定または検出できるものであれば、何でも良い。すなわち、フロントウインドウの内面に曇りが起きた時に、瞬時にフロントウインドウの内面の曇りを除去することが可能であるか否かを判定する。
【００６７】
また、図７のルーチンのステップＳ２１において、吹出口モードがフロントウインドウへの風洩れ有りのＦＯＯＴモードまたはフロントウインドウへの風洩れ無しのＦＯＯＴモードまたはＦ／Ｄモードに設定されているか否かを判定するようにして、空調または送風開始、あるいはエンジン始動時に、ＤＥＦ吹出口２０からフロントウインドウの内面へ吹出風が吹き出し易い状態であるか否かを判定しても良い。また、図７のルーチンのステップＳ２１はなくても良い。また、本実施形態では、車両駆動手段として、車両走行用の水冷式エンジンを用いたが、車両駆動手段として、車両走行用の水冷式モータを用いても良い。
【００６８】
また、ウォームアップ初期のウインドウ防曇制御の制御時間は、前回のＩＧ・ＯＮ→ＩＧ・ＯＦＦからの経過時間、つまりエンジンを停止してからエンジンを再始動するまでの経過時間により演算したが、前回の空調または送風が停止した時からの経過時間など、空調ダクト２内の湿度の上昇度合が推定できるものであれば、何でも良い。なお、空調ダクト２内に直接湿度センサを設けても良い。
【００６９】
また、ウォームアップ初期のウインドウ防曇制御中、強制的に冷凍サイクルのコンプレッサをＯＮしたが、非常に外気温が低く、コンプレッサのロックの恐れがある時や、冷媒圧力異常の時、あるいは乗員がコンプレッサの作動を手動操作によりＯＦＦしている時などは、本実施形態のウインドウ防曇制御をキャンセルするようにしても良い。この場合、コンプレッサが作動しないと、空調ダクト２内の除湿効果が得られないので、代わりに、ＦＡＣＥモードやＢ／Ｌモード等のフロントウインドウへの空調風の吹き出しが非常に少ない吹出口モードに切り替えて、車室内に送風することで、空調ダクト２内を除湿しても良い。
【００７０】
また、ウインドウ防曇制御の制御時間中はブロワ４をＯＦＦとしたが、Ｆ／Ｄモード等のフロントウインドウへの空調風の吹き出しが比較的に少ない吹出口モード（例えばＦＡＣＥモードまたはＢ／ＬモードまたはＦＯＯＴモードまたはＦ／Ｄモード）に切り替えて、ブロワ４を低回転で作動させることにより、ウインドウ防曇制御の制御時間を短くするようにしても良い。
【００７１】
本実施形態では、圧縮機として電磁式容量可変弁を有する可変容量型コンプレッサを用いた例を説明したが、圧縮機として電磁クラッチでＯＮ／ＯＦＦされるコンプレッサ、あるいはモータにより駆動される電動式のコンプレッサを用いても良い。外部容量可変型コンプレッサにおいては、本実施形態のウインドウ防曇制御を最大能力で行うことにより、ウインドウ防曇制御の制御時間を短くすることができる。
【００７２】
本実施形態では、冷却または除湿手段として、空調ダクト２内を流れる空気を冷却または除湿するエバポレータ（冷却用熱交換器）４１、およびこのエバポレータ４１より吸入した冷媒を圧縮するコンプレッサを有する冷凍サイクルを適用した例を説明したが、冷却または除湿手段として、冷凍サイクルのエバポレータ４１以外にも、ペルチェ素子またはその他の化学反応を利用する冷却用熱交換器を有する冷却または除湿手段を用いても良い。さらに、ヒータコア４２の代わりに、冷凍サイクルのコンデンサ（加熱用熱交換器）を設置しても良い。
【００７３】
また、送風機の作動を停止させるか、あるいは非常に低風量にする所定時間（制御時間Ｔｘ）は、冷却水温、車室内温度、日射量、ウインドウ温度、ウインドウ透過度、ウインドウ透過面積、シート温度、ステアリング温度、加熱用熱交換器（ヒータコア４２）温度、冷却用熱交換器（エバポレータ４１）温度、冷却用熱交換器（エバポレータ４１）付近温度（＝エバ後温度）、湿度、ウインドウ曇り面積のうちの１つ以上のパラメータによって演算しても良い。これらによっても、空調ダクト２内の湿度の上昇度合およびフロントウインドウの曇り易さを推定することができる。
【００７４】
また、冷凍サイクルのコンプレッサを作動させるか、あるいは強く作動させる所定時間（制御時間Ｔｘ）は、冷却水温、車室内温度、日射量、ウインドウ温度、ウインドウ透過度、ウインドウ透過面積、シート温度、ステアリング温度、加熱用熱交換器（ヒータコア４２）温度、冷却用熱交換器（エバポレータ４１）温度、冷却用熱交換器（エバポレータ４１）付近温度（＝エバ後温度）、湿度、ウインドウ曇り面積のうち１つ以上のパラメータによって演算しても良い。
【００７５】
また、冷凍サイクルのコンプレッサの作動を停止または弱くする所定条件は、冷却水温、車室内温度、日射量、ウインドウ温度、ウインドウ透過度、ウインドウ透過面積、シート温度、ステアリング温度、加熱用熱交換器（ヒータコア４２）温度、冷却用熱交換器（エバポレータ４１）温度、冷却用熱交換器（エバポレータ４１）付近温度（＝エバ後温度）、湿度、ウインドウ曇り面積のうち１つ以上のパラメータにより決定しても良い。これらによって、コンプレッサの作動時間を短くし、省エネルギーおよびコンプレッサのロックの可能性を減少させることができると共に、フロントウインドウの曇りの可能性が少ない、または曇っても瞬時に除去できる。
【００７６】
また、本実施形態のウインドウ防曇制御を実施中であることを、乗員に知らせる視覚表示手段や聴覚表示手段を設けることにより、空調開始しているにも拘らず、吹出口から風が出ないことで乗員が違和感を感じることを防ぐことができる。また、ＤＥＦモード時はとにかく高風量を出すことで、多少エンジン冷却水温が低くても、フロントウインドウの防曇効果が上がるので、本実施形態のウインドウ防曇制御を中止または中断するようにしても良い。
【００７７】
本実施形態では、運転席側、助手席側の設定温度ＴＳＥＴ（Ｄｒ）、ＴＳＥＴ（Ｐａ）、内気温センサ値ＴＲ、外気温センサ値ＴＡＭおよび日射センサ値ＴＳ（Ｄｒ）、ＴＳ（Ｐａ）によって演算した目標吹出温度ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）に基づいて、快適な空調または風量制御を行うようにしているが、少なくとも車室内の設定温度と内気温センサ値ＴＲとの温度偏差によって演算した車室内の熱負荷に基づいて、快適な空調または風量制御を行うようにしても良い。
【００７８】
本実施形態では、エアコン操作パネル５１に設けられたＭＯＤＥ切替スイッチ５７を操作することで、ＦＯＯＴモードよりもフロントウインドウの内面へ空調風を吹き出す吹出割合が多いＦ／Ｄモードに設定する例を説明したが、吹出口モードのオート制御において目標吹出温度ＴＡＯが所定値以上に高く、吹出口モードとしてＦＯＯＴモードが選択された際に、外気温が所定値（例えば５℃）未満で、且つ日射量が所定値（例えば２００Ｗ／ｍ²）未満の時に、吹出口モードをＦ／Ｄモードに自動的に設定するようにしても良い。
【００７９】
本実施形態では、エアコン操作パネル５１に設けられたＤＥＦスイッチ５４を押すことで、ＦＯＯＴモードよりもフロントウインドウの内面へ空調風を吹き出す吹出割合が非常に多いＤＥＦモードに設定する例を説明したが、吹出口モードのオート制御において目標吹出温度ＴＡＯが所定値以上に高く、吹出口モードとしてＦＯＯＴモードが選択された際に、外気温が所定値（例えば−５℃）未満で、且つ日射量が所定値（例えば５０Ｗ／ｍ²）未満の時に、吹出口モードをＤＥＦモードまたはＦ／Ｄモードに自動的に設定するようにしても良い。
【００８０】
本実施形態では、内外気切替スイッチ５３により設定された吸込口モードに固定している（例えば吸込口モードを外気導入モードに固定している）が、運転席側、助手席側の目標吹出温度ＴＡＯ（Ｄｒ）、ＴＡＯ（Ｐａ）が高い温度である程、車室外空気の吸込割合が多くなるように、あるいは車室内空気の吸込割合が少なくなるようにオート内外気制御するようにしても良い。
【００８１】
また、ウォームアップ初期のウインドウ防曇制御中は、吸込口モードを、車室内空気の吸込割合が非常に多い内気循環モードに切り替えるようにしても良い。この制御により、ラム圧によるフロントウインドウへの送風がなくなり、フロントウインドウの内面の曇りを防止することが可能となる。なお、ウインドウ防曇制御終了後は、速やかに、オート内外気制御に戻すことが望ましい。この理由は、乗員の呼吸により、車室内湿度が上昇し、ウインドウの曇りの原因となるためである。
【００８２】
本実施形態では、ウォームアップ初期のウインドウ防曇制御中は、吹出口モードを強制的にＤＥＦ洩れ無しＦＯＯＴモードに切り替えるようにしたが、ウォームアップ初期のウインドウ防曇制御中は、Ｆ／ＤモードまたはＤＥＦ洩れ有りＦＯＯＴモードまたはＢ／ＬモードまたはＦＡＣＥモード等の、ＤＥＦモードよりもフロントウインドウへの吹出風量または吹出割合の少ない吹出口モードに強制的に切り替えるようにしても良い。これらの場合には、ＤＥＦモードよりはフロントウインドウへ吹き出される風が少なくなり、フロントウインドウの防曇性能を向上させることが可能となる。
【図面の簡単な説明】
【図１】Ａ／Ｃユニットの全体構成を示した模式図である（実施形態）。
【図２】車両のダッシュパネルを示した正面図である（実施形態）。
【図３】エアコン操作パネルを示した正面図である（実施形態）。
【図４】エアコンＥＣＵの制御プログラムの一例を示したフローチャートである（実施形態）。
【図５】目標吹出温度に対するブロワ制御電圧特性を示した特性図である（実施形態）。
【図６】目標吹出温度に対する吹出口モード制御特性を示した特性図である（実施形態）。
【図７】エアコンＥＣＵによるウォームアップ初期のウインドウ防曇制御を示したフローチャートである（実施形態）。
【図８】エアコンＥＣＵによるウォームアップ初期のウインドウ防曇制御を示したフローチャートである（実施形態）。
【符号の説明】
１Ａ／Ｃユニット
２空調ダクト
３内外気切替ドア（吸込割合調節手段）
４ブロワ（送風機）
６内気吸込口
７外気吸込口
９ブロワモータ（アクチュエータ）
１０エアコンＥＣＵ（空調制御手段）
２０ＤＥＦ吹出口
２１ＦＡＣＥ吹出口
２２ＦＡＣＥ吹出口
２３ＦＯＯＴ吹出口
２４運転席側吹出口切替ドア（吹出口モード切替手段）
２５運転席側吹出口切替ドア（吹出口モード切替手段）
２６運転席側吹出口切替ドア（吹出口モード切替手段）
２８サーボモータ（アクチュエータ）
２９サーボモータ（アクチュエータ）
３１ＦＡＣＥ吹出口
３２ＦＡＣＥ吹出口
３３ＦＯＯＴ吹出口
３５助手席側吹出口切替ドア（吹出口モード切替手段）
３６助手席側吹出口切替ドア（吹出口モード切替手段）
３９サーボモータ（アクチュエータ）
４１エバポレータ（冷却用熱交換器）
４２ヒータコア（加熱用熱交換器）
５３内外気切替スイッチ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to warm-up control of a vehicle air conditioner, and more particularly to window anti-fogging control in the early stage of warm-up of a vehicle air conditioner.
[0002]
[Prior art]
Conventionally, air containing moisture generated by the water adhering to the evaporator being heated by the nearby heater core and evaporating is blown out from the defroster (DEF) outlet to the window at the early stage of warm-up, and the inner surface of the front window is clouded. When the engine mounted on the vehicle is restarted and the heating operation is started for the purpose of preventing the occurrence of the occurrence, if the cooling water temperature of the engine is below a predetermined value, the operation of the blower is stopped and the inside / outside air mode Is set to the outside air introduction mode, the outlet mode is set to the DEF mode, and the compressor is operated until a predetermined time elapses, thereby dehumidifying the air-conditioning duct and causing fogging on the inner surface of the front window. A vehicle air conditioner that performs window anti-fogging control in the initial warm-up to prevent this is known ( Patent No. 2,769,073).
[0003]
[Problems to be solved by the invention]
However, in the conventional window anti-fogging control at the early stage of warm-up, when the vehicle is run immediately after the engine is restarted, the outside air from the passenger compartment is brought into the air conditioning duct from the outside air suction port due to the ram pressure even if the operation of the blower is stopped. Flow into. And the air containing the moisture before dehumidification in an air-conditioning duct was blown off from the DEF blower outlet to the inner surface of the front window, and there was a problem that the inner surface of the front window was clouded.
[0004]
OBJECT OF THE INVENTION
An object of the present invention is to prevent fogging of the window from occurring by suppressing the air containing moisture from being blown to the window by the ram pressure even when the vehicle is driven immediately after the vehicle driving means is restarted. An object of the present invention is to provide a vehicle air conditioner that can be prevented.
[0005]
[Means for Solving the Problems]
  Claim1According to the described invention,At the start of operation of the vehicle drive means or after the start of operation,Switch to the blowout mode with a small blowout volume or blowout ratio to the window, and operate the cooling or dehumidifying means or activate strongly until a predetermined condition is satisfied, for example, until a predetermined time has elapsed.And reduce the ratio of the outside air intake into the air conditioning duct.Even when the vehicle is run immediately after restarting the vehicle drive means,While the ram pressure applied to the outside air inlet is suppressed,Moisture can be removed from the air conditioning duct. Accordingly, it is possible to prevent the air containing moisture from being blown out from the air outlet to the window, and thus it is possible to prevent the window from being fogged.
[0006]
  According to invention of Claim 2, Claim 6, Claim 10, and Claim 14, before the start of air-conditioning or ventilation, or at the time of the operation of air-conditioning or ventilation, the blower outlet with the small amount of blowing air to a window, or a blowing ratio The vehicle was run immediately after restarting the vehicle driving means by switching to the mode and operating the cooling or dehumidifying means until the predetermined condition was satisfied or until the predetermined time passed, or by operating strongly. Even in this case, moisture can be removed from the air conditioning duct. Thereby, the same effect as that of the first aspect of the invention can be achieved.
  Claim 3, Claim 7, 11 and 15According to the invention described in (3), at the time of starting the operation of the vehicle driving means or after the start of the operation, the mode is switched to the air outlet mode with a small amount of air blowing to the window or the air blowing ratio, and until a predetermined condition is satisfied.OrBy operating the cooling or dehumidifying means or operating strongly until a predetermined time has elapsed, moisture can be removed from the air conditioning duct even when the vehicle is driven immediately after the vehicle driving means is restarted. . Thereby, the same effect as that of the first aspect of the invention can be achieved.
[0007]
  Claim4, claim 8, claim 12 and claim 16According to the invention described in the above, until the predetermined condition is satisfied at the start of the operation of the vehicle driving means or after the start of the operation, until the predetermined condition is satisfied, until the predetermined condition is satisfied.Or until a predetermined time elapsesThe vehicle is allowed to run immediately after the vehicle drive means is restarted by operating the cooling or dehumidifying means or by operating it strongly or by switching to a blowout mode in which the amount of air blown out to the window or the blowout ratio is other than the maximum. Even in such a case, the operation of the blower can be started after removing moisture from the air conditioning duct. Thereby, the same effect as that of the invention described in claim 1 can be achieved..
[0009]
Claim5, claim 9, claim 13 and claim 17According to the invention described in the above, at the start of the operation of the vehicle drive means or after the start of the operation,The cooling or dehumidifying means is activated or strongly activated until a predetermined condition is satisfied or until a predetermined time elapses.By reducing the intake rate of outside air into the air conditioning duct until the predetermined time has elapsed, the ram pressure applied to the outside air inlet can be suppressed even when the vehicle is driven immediately after the vehicle drive means is restarted. In addition, moisture can be removed from the air conditioning duct. Thereby, the same effect as that of the first aspect of the invention can be achieved.
[0013]
  Claim2 to 5According to the invention described in the above, the predetermined time for operating or strongly operating the cooling or dehumidifying means is the cooling water temperature of the vehicle driving means, the vehicle interior temperature, the amount of solar radiation, the window temperature, the window permeability, the window transmission area, One or more of a seat temperature, a steering temperature, a heating heat exchanger temperature, a cooling heat exchanger temperature, and a temperature near the cooling heat exchanger is a predetermined value or more, or one or more of humidity and window fogging area When is less than a predetermined value, it is desirable to reduce it or to make it zero.
[0014]
  Claim6 to 9According to the invention, the predetermined time during which the cooling or dehumidifying means is activated or strongly activated is the cooling means temperature of the vehicle driving means, the cabin temperature, the amount of solar radiation, the window temperature, the window permeability, and the window transmission area. , Seat temperature, steering temperature, heat exchanger temperature for heating, heat exchanger temperature for cooling, temperature near the heat exchanger for cooling is higher, or one or more of humidity, window fogging area The lower the value, the better.
[0015]
  Claim10 thru 13According to the invention described in the above, the predetermined conditions for stopping or weakening the operation of the cooling or dehumidifying means are the cooling water temperature of the vehicle driving means, the vehicle interior temperature, the amount of solar radiation, the window temperature, the window permeability, the window transmission area, the seat One or more of temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling heat exchanger vicinity temperature is a predetermined value or more, or one of humidity and window fogging area One or more is less than a predetermined value.
[0016]
  Claim14 to 17According to the invention described in the above, the predetermined conditions for stopping or weakening the operation of the cooling or dehumidifying means are the cooling water temperature of the vehicle driving means, the vehicle interior temperature, the amount of solar radiation, the window temperature, the window permeability, the window transmission area, the seat One or more of temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, temperature near the heat exchanger for cooling increase by a predetermined amount or one of humidity, window fogging area The above is a decrease by a predetermined amount or more.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
[Configuration of Embodiment]
1 to 8 show an embodiment of the present invention, FIG. 1 is a diagram showing the overall configuration of an A / C unit, FIG. 2 is a diagram showing a dash panel of a vehicle, and FIG. 3 is an air conditioner. It is the figure which showed the operation panel.
[0019]
The vehicle air conditioner of the present embodiment includes an actuator for each air conditioner in an air conditioning unit (hereinafter referred to as an A / C unit) 1 that air-conditions a vehicle interior of a vehicle such as an automobile equipped with a water-cooled engine for traveling the vehicle. It is configured to be controlled by an air conditioning control device (control circuit board: hereinafter referred to as an air conditioner ECU) 10. The A / C unit 1 independently controls the temperature adjustment and the change of the air outlet mode between the right side of the passenger compartment (hereinafter referred to as the driver's seat side) and the left side of the passenger compartment (hereinafter referred to as the passenger seat) of the air conditioning zone. It is an air conditioner unit that can be performed.
[0020]
The A / C unit 1 includes an air conditioning duct 2 disposed in front of the vehicle interior of the vehicle. An inside / outside air switching door 3 and a blower 4 are provided upstream of the air conditioning duct 2. The inside / outside air switching door 3 is driven by an actuator such as a servo motor 5 to change the opening between the inside air suction port 6 and the outside air suction port 7 (so-called suction port mode). It is a suction ratio adjusting means for adjusting a suction ratio between air (hereinafter referred to as outside air) and vehicle interior air (hereinafter referred to as inside air). Here, in the present embodiment, by operating an inside / outside air changeover switch 53 provided on the air conditioner operation panel 51 described later, an inside air circulation (REC) in which the inside air suction ratio is 100% and the outside air suction ratio is 0%. ) Mode, inlet mode such as 100% outside air suction ratio, 0% inside air suction ratio, and inside / outside air introduction (FRS) mode where the outside air suction rate is higher than the inside air suction rate Switch to
[0021]
The blower 4 corresponds to the blower of the present invention, and is a centrifugal blower that is rotationally driven by a blower motor 9 controlled by a blower drive circuit 8 and generates an air flow toward the vehicle interior in the air conditioning duct 2. Note that the higher the blower control voltage (output blower level) applied to the actuator such as the blower motor 9 from the blower drive circuit 8, the greater the air volume (blower air volume) of the blower 4.
[0022]
An evaporator (cooling heat exchanger) 41 that cools the air passing through the air conditioning duct 2 is provided at the center of the air conditioning duct 2. A heater core (heating heat exchanger) 42 for heating the air passing through the first and

second air passages

11 and 12 is provided on the downstream side of the evaporator 41. Here, the heater core 42 of the present embodiment is installed in parallel with the radiator in a coolant circuit in which engine coolant of a water-cooled engine (vehicle drive means) circulates.
[0023]
The first air passage 11 and the second air passage 12 are partitioned by a partition plate 14. Downstream of the heater core 42, a driver seat side and passenger seat side air mix (A / M) door for independently adjusting the temperatures of the driver seat side air conditioning zone and the passenger seat side air conditioning zone in the passenger compartment. 15 and 16 are provided. The driver side and passenger side A / M doors 15 and 16 are driven by actuators such as

servo motors

17 and 18 to adjust the temperature of air blown out toward the driver side and passenger side air conditioning zones. To do.
[0024]
Here, the evaporator 41 of this embodiment constitutes one component of the refrigeration cycle. The refrigeration cycle corresponds to the cooling or air-conditioning means of the present invention, and is a refrigerant compressor that compresses and discharges refrigerant by being driven by a belt on the output shaft of a vehicle traveling engine mounted in the engine room of the vehicle. (Compressor), a refrigerant condenser (condenser) that condenses and liquefies the refrigerant discharged from the compressor, a liquid receiver (receiver) that gas-liquid separates the liquid refrigerant flowing from the capacitor, and a liquid that flows from the receiver An expansion valve for adiabatically expanding the refrigerant and the evaporator (refrigerant evaporator) 41 for evaporating and evaporating the gas-liquid two-phase refrigerant flowing from the expansion valve. Cooling air is blown to the condenser by an electric condenser fan.
[0025]
Among these, the compressor has intermittent rotational power from the engine by an electromagnetic clutch controlled by the air conditioner ECU 10. When the electromagnetic clutch is turned on and the compressor is started, the evaporator 41 cools and dehumidifies the air passing through the air conditioning duct 2. Further, in the present embodiment, the variable capacity control is performed based on a control signal output in accordance with a comparison result between the post-evaporation temperature (TE) that is a detection value of the post-evaporation temperature sensor 74 and the target post-evaporation temperature (TEO). A variable displacement compressor having an electromagnetic displacement control valve is used.
[0026]
As shown in FIGS. 1 and 2, the conditioned air flows toward the inner surface of the front window at the air downstream ends (front surfaces of the dash panel 50) of each blowing duct communicating with the air downstream side of the first air passage 11. A defroster (DEF) outlet 20 for blowing out air, a center face (FACE) outlet 21 and a side face (FACE) outlet for blowing air-conditioning air toward the head and chest of the occupant on the driver's seat and the inner surface of the side window An outlet 22 and a foot (FOOT) outlet 23 for blowing air-conditioned air toward the feet of the passenger on the driver's seat side are opened. The DEF air outlet 20 blows conditioned air not only toward the inner surface of the front window on the driver's seat but also toward the inner surface of the front window on the passenger's seat.
[0027]
In addition, air conditioned air is blown out toward the passenger chest side occupant chest and the side window at the air downstream end (front surface of the dash panel 50) of each blowing duct communicating with the air downstream side of the second air passage 12. A center face (FACE) outlet 31 and a side face (FACE) outlet 32 for opening, and a foot (FOOT) outlet 33 for blowing air-conditioned air toward the feet of the passenger on the passenger seat side are opened. Yes. A plurality of swing louvers capable of changing the blowing direction of the conditioned air blown from each blower outlet are attached to the center grille and the side grille forming the

FACE blower outlets

21 and 22 and the

FACE blower outlets

31 and 32, respectively. It has been.
[0028]
In the first and

second air passages

11 and 12, the driver's seat side and the passenger's seat side blow for setting the air outlet mode of the driver's seat side air conditioning zone and the passenger seat side air conditioning zone independently of each other are provided. Exit switching doors 24 to 26, 35, and 36 are provided. The driver seat side and passenger seat side outlet switching doors 24 to 26, 35, and 36 are driven by actuators such as

servo motors

28, 29, and 39 to change the outlet mode between the driver seat side air conditioning zone and the passenger seat. It is a blower outlet mode switching means which can be switched with each side air-conditioning zone. Here, the outlet mode of the present embodiment includes a FACE mode, a B / L mode, a DEF leak-free FOOT mode, an F / D mode, a DEF mode, and the like. It should be noted that the FOOT mode may be the FOOT mode with DEF leakage in which the blowing rate of the conditioned air blown from the DEF outlet 20 is smaller than that in the F / D mode.
[0029]
The air conditioner ECU 10 corresponds to the air conditioning control means of the present invention. When an ignition switch for starting and stopping the engine is turned on (IG · OFF → ON), a battery (Fig. When DC power is supplied from (not shown), arithmetic processing and control processing are started. As shown in FIGS. 1 and 3, the air conditioner ECU 10 receives switch signals from various switches on the air conditioner operation panel 51 that are integrally installed on the front surface of the dash panel 50.
[0030]
The air conditioner operation panel 51 includes a liquid crystal display (display) 52, an inside / outside air changeover switch 53, a front defroster switch (hereinafter referred to as DEF switch) 54, a rear defroster (defogger) switch 55, a dual switch 56, an outlet mode. (MODE) changeover switch 57, blower air volume changeover switch 58, AUTO switch 60, OFF switch 61, A / C switch 59, driver's seat (DRIVER) side temperature setting switch 62, passenger's seat (PASSENGER) side temperature setting switch 63, etc. is set up.
[0031]
Of the above, the dual switch 56 is a left / right independent control command means for commanding left / right independent temperature control in which temperature adjustment in the driver's seat side air conditioning zone and temperature adjustment in the passenger seat side air conditioning zone are performed independently of each other. The MODE changeover switch 57 switches the outlet mode to the FACE mode, B / L mode, FOOT mode, or F / D mode according to the operation of the occupant.
[0032]
The display 52 displays the driver seat side set temperature, the passenger seat set temperature, the air outlet mode, the blower air volume, and the like. The driver seat side temperature setting switch 62 is a driver seat side temperature setting means for setting the temperature in the driver seat side air conditioning zone to a desired temperature, and includes an up switch 62a and a down switch 62b. The passenger seat side temperature setting switch 63 is a passenger seat side temperature setting means for setting the temperature in the passenger seat side air conditioning zone to a desired temperature, and includes an up switch 63a and a down switch 63b. Various operation switches on the air conditioner operation panel 51 may be provided on the display 52.
[0033]
The air conditioner ECU 10 includes a well-known microcomputer including functions of a CPU, a memory (ROM or EEPROM, RAM), an I / O port (input / output circuit), a timer circuit, and the like. The sensor signals from the various sensors are A / D converted by the input circuit and then input to the microcomputer.
[0034]
That is, the input circuit of the air conditioner ECU 10 includes an inside air temperature sensor 71 as an inside air temperature detecting means for detecting a vehicle interior temperature (also referred to as an inside air temperature), and an outside air temperature detecting means for detecting a vehicle outside temperature (hereinafter referred to as an outside air temperature). Are connected to an outside air temperature sensor 72, and a solar radiation sensor 73 as a solar radiation detecting means for detecting the amount of solar radiation (solar radiation intensity) irradiated in the driver's seat and passenger seat side air conditioning zones.
[0035]
Further, an input circuit of the air conditioner ECU 10 includes an after-evaporation temperature sensor 74 as an after-evaporation temperature detecting means for detecting an air temperature immediately after passing through the evaporator 41 (hereinafter referred to as an after-evaporation temperature), engine cooling water (vehicle driving means). A cooling water temperature sensor 75 is connected as a cooling water temperature detecting means for detecting the temperature of the cooling means). Further, the air temperature ECU 10 is connected to driver side and passenger side air temperature sensors (duct sensors) 76 and 77 for detecting the temperature of the air conditioned air blown out to the driver side and passenger side air conditioning zones, respectively. Has been.
[0036]
Among these, for the inside air temperature sensor 71, the outside air temperature sensor 72, the after-evaporation temperature sensor 74, and the cooling water temperature sensor 75, for example, temperature sensors such as a thermistor are used. Here, the inside air temperature sensor 71 of the present embodiment is accommodated in a recess formed on the front surface of the dash panel 50 in the vicinity of the FACE outlet 21. Note that the recess is closed by a lid 50a in which a vent is formed. Further, the solar radiation sensor 73 is installed on the upper side of the dash panel 50 in the vicinity of the front passenger side front window in the vehicle interior.
[0037]
[Control Method of Embodiment]
Next, an air conditioning control method by the air conditioner ECU 10 of the present embodiment will be described based on FIGS. 1 to 8. Here, FIG. 4 is a flowchart showing an example of a control program of the air conditioner ECU 10.
[0038]
First, when the ignition switch is turned on and DC power is supplied to the air conditioner ECU 10, execution of a control program (routine in FIG. 4) stored in advance in the ROM is started. At this time, first, the contents of the data processing memory (RAM) built in the microcomputer inside the air conditioner ECU 10 are initialized (step S1).
[0039]
Next, various data are read into a data processing memory (RAM). That is, switch signals from various operation switches and sensor signals from various sensors are input (step S2).
[0040]
In particular, an after-evaporation temperature (TE) that is a detection value of the after-evaporation temperature sensor 74, an engine cooling water temperature (TW) that is a detection value of the cooling water temperature sensor 75, and the like are input and stored in the data processing memory.
[0041]
Next, based on the storage data as described above and the following

formulas

1 and 2, the driver's side target blowing temperature TAO (Dr) and the passenger's side target blowing temperature TAO (Pa ) (Target blowing temperature determining means: step S3). Here, the target blowing temperatures TAO (Dr) and TAO (Pa) on the driver side and the passenger side are functions of the vehicle interior temperature calculated including at least the temperature deviation between the vehicle interior temperature and the set temperature in the vehicle interior. is there.
[0042]
[Expression 1]

[Expression 2]

[0043]
However, TSET (Dr) and TSET (Pa) represent the set temperature of the driver side air conditioning zone and the set temperature of the passenger side air conditioning zone, respectively, TR and TAM represent the vehicle interior temperature and the outside temperature, respectively. (Dr) and TS (Pa) represent the amount of solar radiation irradiated in the driver seat side and passenger seat side air conditioning zones, respectively. KSET, KR, KAM, KS, Kd (Dr) and Kd (Pa) are temperature setting gain, vehicle interior temperature gain, outside air temperature gain, solar radiation gain, and temperature difference correction between the driver's seat side and passenger seat side air conditioning zones, respectively. Represents the gain.
[0044]
Ka (Dr) and Ka (Pa) represent gains for correcting the degree of influence of the outside air temperature TAM on the air conditioning temperatures of the driver's seat side air conditioning zone and the passenger seat side air conditioning zone, respectively, and CD (Dr), CD (Pa) is a constant corresponding to the degree of influence, and C is a correction constant. Here, values such as Ka (Dr), Ka (Pa), CD (Dr), and CD (Pa) are various parameters such as the shape and size of the vehicle, the direction of air blown from each outlet of the A / C unit 1 and the like. It changes with.
[0045]
Next, the auto blower air volume is calculated based on the target blowing temperature TAO (Dr) and TAO (Pa) on the driver seat side and the passenger seat side obtained in step S3 (step S4). Specifically, the above-described auto blower airflow {blower control voltage VA} is obtained by changing the blower control voltages VA (Dr) and VA (Pa) respectively corresponding to the target blow temperature TAO (Dr) and TAO (Pa) in FIG. While obtaining based on the characteristic diagram, it is obtained by averaging the blower control voltages VA (Dr) and VA (Pa).
[0046]
Next, the target blowing temperatures TAO (Dr) and TAO (Pa) on the driver's seat side and the passenger seat side obtained in the above step S3, and the outlet mode characteristics with respect to the target blowing temperature shown in the characteristic diagram of FIG. Based on the driver side and passenger side air conditioning zones, the air outlet modes are determined (step S5). Specifically, in determining the outlet mode, the target outlet temperatures TAO (Dr) and TAO (Pa) are determined so that the FACE mode, the B / L mode, and the FOOT mode are set from a low temperature to a high temperature. Has been.
[0047]
Further, by operating a MODE switch 57 provided on the air conditioner operation panel 51, the air outlet operation mode is fixed to any one of the FACE mode, B / L mode, FOOT mode, and F / D mode. Further, when the DEF switch 54 provided on the air conditioner operation panel 51 is pressed, the mode is fixed to the DEF mode.
[0048]
In addition, said FACE mode is a blower outlet mode which blows off an air-conditioning wind toward a passenger | crew's upper body (head chest part). The B / L mode is an air outlet mode that blows air-conditioned air toward the upper body (head and chest) and feet of the occupant. And FOOT mode is a blower outlet mode which blows an air-conditioning wind toward a passenger | crew's step part. Further, the F / D mode is a blowout mode that blows conditioned air toward the feet of the passenger and the inner surface of the front window of the vehicle. The DEF mode is an outlet mode that blows conditioned air toward the inner surface of the front window of the vehicle.
[0049]
Next, the target A / M opening SW (Dr) (%) of the driver seat side A / M door 15 and the target A / M opening SW (Pa) (%) of the passenger seat side A / M door 16 are calculated. (Step S6). The calculation of the target A / M opening degree SW (Dr) and the target A / M opening degree SW (Pa) is performed based on the following equation 3 and equation 4.
[0050]
[Equation 3]

[Expression 4]

However, TAO (Dr) and TAO (Pa) represent the target blowing temperature on the driver's seat side and the passenger seat side, respectively, TE represents the post-evacuation temperature that is a detection value of the post-evacuation temperature sensor 74, and TW is The engine coolant temperature that is a detection value of the coolant temperature sensor 75 is represented.
[0051]
Next, the routines of FIGS. 7 and 8 are activated to perform window anti-fogging control at the initial warm-up (step S7). Next, an output signal is sent to the blower drive circuit 8 so that the blower control voltage (= output blower level) determined in step S4 or step S7 is obtained (step S8).
[0052]
Next, energization control is performed on the

servo motors

17 and 18 so that the target A / M opening degree SW (Dr) and SW (Pa) determined in step S6 are obtained (step S9). Next, energization control is performed on the

servomotors

28, 29, and 39 so that the air outlet mode determined in step S5 is set (step S10). Thereafter, the process returns to step S2.
[0053]
Next, window anti-fogging control in the early stage of warm-up by the air conditioner ECU 10 according to the present embodiment will be described with reference to FIGS. Here, FIG. 7 and FIG. 8 are flowcharts showing window anti-fogging control at the initial warm-up by the air conditioner ECU 10.
[0054]
First, when the routine of FIG. 7 is started, it is determined whether or not the engine coolant temperature (TW), which is a detected value of the coolant temperature sensor 75, is less than a predetermined value (for example, 60 ° C.) (step S21). If this determination result is YES, that is, if the engine coolant temperature (TW) is less than 60 ° C., it is necessary to perform the window anti-fogging control at the initial warm-up, and therefore the process proceeds to the control process of step S22.
[0055]
If the determination result of step S21 is NO, the routine of FIGS. 7 and 8 is exited. That is, if the engine coolant temperature (TW) is 60 ° C. or higher, it is determined that the fog on the inner surface of the front window can be instantaneously cleared, and the window anti-fogging control at the initial warm-up is not performed.
[0056]
On the other hand, if the decision result in the step S21 is YES, first, a control time Tx (sec) for performing the window anti-fogging control is determined (step S22). Here, the humidity in the air conditioning duct 2 becomes higher as the time when the moisture adhering to the evaporator 41 is warmed by the engine cooling water flowing into the heater core 42 installed nearby and the moisture evaporates is longer.
[0057]
For this reason, the longer the elapsed time from the previous ignition switch IG ON to OFF, that is, the elapsed time T (min) from when the engine is stopped to when the engine is restarted, the window anti-fogging control at the initial warm-up is performed. It is desirable to set the control time Tx (sec) to be implemented long.
[0058]
Next, the air outlet mode is forcibly switched to the FOOT mode until the control time Tx (sec) for performing the window antifogging control calculated in step S22 elapses after the engine is restarted (step S23). ). Here, the FOOT mode is a blower outlet mode in which the blowout ratio from the DEF blower outlet 20 to the inner surface of the front window is small.
[0059]
Next, after the routine of FIG. 8 is started and the engine is restarted, the refrigeration cycle is forcibly performed until the control time Tx (sec) for performing the window antifogging control calculated in step S22 elapses. The compressor and the condenser fan are turned on (step S24).
[0060]
Next, after the engine is restarted, the blower 4 is turned OFF until the control time Tx (sec) for performing the window antifogging control calculated in step S22 elapses. Then, the blower air volume fx is gradually increased linearly to return to the normal air volume control in order to eliminate a sense of discomfort to the occupant after the control time Tx (sec) elapses until the control time Tx + 6 (sec). (Step S25).
[0061]
Next, the auto blower air volume determined in step S4 in the flowchart of FIG. 4 is compared with the blower air volume fx during the window antifogging control determined in step S25, and the smaller one is set as the output blower level (blower control voltage). This is used for output control in step S8 (step S26). Thereafter, the routine of FIGS. 7 and 8 is exited.
[0062]
[Effect of the embodiment]
As described above, in the A / C unit 1 of the present embodiment, the outlet mode is forcibly switched to the FOOT mode until the control time Tx (sec) elapses after the engine is restarted. As a result, when the vehicle is run immediately after the engine is restarted, the outside air may flow into the air conditioning duct 2 due to the ram pressure applied to the outside air inlet 7, and the humidity in the air conditioning duct 2 may be blown out to the front window. However, because of the FOOT mode, the DEF outlet 20 is closed by the driver side outlet switching door 24, and the FOOT outlets 23, 33 are opened by the driver side and passenger side

outlet switching doors

26, 36. It is. For this reason, it is possible to prevent the moisture in the air conditioning duct 2 from being blown out to the inner surface of the front window by letting the wind containing moisture to the feet of the passenger who is relatively insensitive to the passenger's face. .
[0063]
In addition, the compressor and condenser fan are forcibly turned on and the blower 4 is turned off until the control time Tx (sec) elapses after the engine is restarted. By condensing the moisture in the air conditioning duct 2 onto the surface of the evaporator 41, the inside of the air conditioning duct 2 can be reliably dehumidified before the ventilation into the vehicle interior is started.
[0064]
As a result, the air containing moisture does not blow out from the DEF outlet 20 to the inner surface of the front window, and after the operation of the blower 4 is started, the less humid air is reheated when passing through the heater core 42, Hot conditioned air blows out from the outlet into the passenger compartment. For example, when the air outlet mode is switched to the F / D mode or the DEF mode after the control time Tx (sec) has elapsed, high-temperature conditioned air is blown from the DEF air outlet 20 to the inner surface of the front window. The anti-fogging or fogging of the inner surface can be cleared.
[0065]
Further, when the engine cooling water temperature (TW) is 60 ° C. or higher, the increase in humidity in the air conditioning duct 2 is still small, and even if the inner surface of the front window is somewhat cloudy, for example, the air is blown out from the DEF outlet 20. Since the blowing temperature of the blown wind is high, anti-fogging or fogging of the inner surface of the front window can be instantaneously cleared.
[0066]
[Other Embodiments]
In this embodiment, in step S21 of the routine of FIG. 7, it is determined whether or not the engine coolant temperature (TW) is lower than a predetermined value (for example, 60 ° C.). Any temperature can be used as long as the temperature of the blown air blown from the DEF blower outlet 20 to the inner surface of the front window can be estimated or detected, such as the temperature of the heater core 42). That is, when fogging occurs on the inner surface of the front window, it is determined whether the fogging on the inner surface of the front window can be instantaneously removed.
[0067]
Further, in step S21 of the routine of FIG. 7, it is determined whether or not the outlet mode is set to the FOOT mode with wind leakage to the front window, the FOOT mode without wind leakage to the front window, or the F / D mode. In this way, it may be determined whether or not the blown air is likely to blow out from the DEF outlet 20 to the inner surface of the front window at the start of air conditioning or air blowing or engine start. Further, step S21 of the routine of FIG. In the present embodiment, a water-cooled engine for traveling the vehicle is used as the vehicle driving means, but a water-cooled motor for traveling the vehicle may be used as the vehicle driving means.
[0068]
In addition, the control time of the window anti-fogging control at the initial warm-up was calculated by the elapsed time from the previous IG · ON → IG · OFF, that is, the elapsed time from the engine stop to the engine restart. Anything can be used as long as the degree of increase in humidity in the air conditioning duct 2 can be estimated, such as the elapsed time since the previous air conditioning or blowing stopped. A humidity sensor may be provided directly in the air conditioning duct 2.
[0069]
Also, during the warm-up initial window anti-fogging control, the compressor of the refrigeration cycle was forcibly turned on, but when the outside air temperature is very low and there is a risk of the compressor locking, when the refrigerant pressure is abnormal, or when the passenger When the operation of the compressor is turned off manually, the window anti-fogging control of this embodiment may be canceled. In this case, if the compressor does not operate, the dehumidifying effect in the air conditioning duct 2 cannot be obtained. Instead, the blowout mode is such that the blowout of conditioned air to the front window such as the FACE mode and the B / L mode is very small. The air conditioning duct 2 may be dehumidified by switching and blowing into the passenger compartment.
[0070]
Further, the blower 4 is turned off during the window anti-fogging control time, but the blowout mode (for example, FACE mode or B / L mode) in which the blowing of conditioned air to the front window in the F / D mode or the like is relatively small. Alternatively, the window defogging control time may be shortened by switching to the FOOT mode or the F / D mode and operating the blower 4 at a low speed.
[0071]
In this embodiment, an example in which a variable displacement compressor having an electromagnetic displacement variable valve is used as a compressor has been described. However, a compressor that is turned on / off by an electromagnetic clutch or an electric drive driven by a motor is used as the compressor. A compressor may be used. In the external capacity variable compressor, the window defogging control time can be shortened by performing the window defogging control of the present embodiment with the maximum capacity.
[0072]
In this embodiment, a refrigeration cycle having an evaporator (cooling heat exchanger) 41 that cools or dehumidifies the air flowing in the air conditioning duct 2 and a compressor that compresses the refrigerant sucked from the evaporator 41 as cooling or dehumidifying means. Although the applied example was demonstrated, as a cooling or dehumidification means, you may use the cooling or dehumidification means which has the heat exchanger for cooling using a Peltier device or another chemical reaction other than the evaporator 41 of a refrigerating cycle. Further, instead of the heater core 42, a condenser (heating heat exchanger) for the refrigeration cycle may be installed.
[0073]
Further, the predetermined time (control time Tx) for stopping the operation of the blower or making the air flow very low is the cooling water temperature, the vehicle interior temperature, the solar radiation amount, the window temperature, the window permeability, the window transmission area, the seat temperature, Steering temperature, heating heat exchanger (heater core 42) temperature, cooling heat exchanger (evaporator 41) temperature, cooling heat exchanger (evaporator 41) vicinity temperature (= post-evaporation temperature), humidity, window cloudy area The calculation may be performed using one or more parameters. Also by these, it is possible to estimate the degree of increase in humidity in the air conditioning duct 2 and the ease of fogging of the front window.
[0074]
Further, the predetermined time (control time Tx) during which the compressor of the refrigeration cycle is operated or strongly operated is the cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature. , One of heating heat exchanger (heater core 42) temperature, cooling heat exchanger (evaporator 41) temperature, cooling heat exchanger (evaporator 41) vicinity temperature (= post-evaporation temperature), humidity, and window cloudy area You may calculate by the above parameters.
[0075]
The predetermined conditions for stopping or weakening the operation of the compressor of the refrigeration cycle are cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger ( It is determined by one or more parameters among the heater core 42) temperature, the cooling heat exchanger (evaporator 41) temperature, the temperature near the cooling heat exchanger (evaporator 41) (= post-evaporation temperature), humidity, and window fogging area. Also good. As a result, the operation time of the compressor can be shortened, the energy saving and the possibility of locking the compressor can be reduced, and the possibility of fogging of the front window is low or even if it is cloudy, it can be removed instantly.
[0076]
In addition, by providing visual display means and auditory display means for notifying the occupant that the window anti-fogging control of this embodiment is being implemented, no air comes out from the air outlet even though air conditioning has started. This prevents the passengers from feeling uncomfortable. In addition, in the DEF mode, anyway, the high air volume is output, so that the anti-fogging effect of the front window is improved even if the engine cooling water temperature is somewhat low. Therefore, the window anti-fogging control of this embodiment may be stopped or interrupted. good.
[0077]
In the present embodiment, the set temperatures TSET (Dr), TSET (Pa), the inside air temperature sensor value TR, the outside air temperature sensor value TAM, and the solar radiation sensor values TS (Dr), TS (Pa) on the driver seat side and the passenger seat side are used. Comfortable air conditioning or air volume control is performed based on the calculated target outlet temperatures TAO (Dr) and TAO (Pa), but at least calculated based on the temperature deviation between the set temperature in the passenger compartment and the internal air temperature sensor value TR. Comfortable air conditioning or air volume control may be performed based on the heat load in the passenger compartment.
[0078]
In the present embodiment, an example of setting the F / D mode in which the blowout ratio of blowing the conditioned air to the inner surface of the front window is set higher than that in the FOOT mode by operating the MODE switch 57 provided on the air conditioner operation panel 51 will be described. However, when the target outlet temperature TAO is higher than a predetermined value in the automatic control in the outlet mode and the FOOT mode is selected as the outlet mode, the outside air temperature is less than a predetermined value (for example, 5 ° C.) and the amount of solar radiation. Is a predetermined value (for example, 200 W / m²), The air outlet mode may be automatically set to the F / D mode.
[0079]
In the present embodiment, an example has been described in which the DEF mode is set such that the blowing rate of blowing the conditioned air to the inner surface of the front window is much higher than the FOOT mode by pressing the DEF switch 54 provided on the air conditioner operation panel 51. When the target outlet temperature TAO is higher than a predetermined value in the automatic control of the outlet mode and the FOOT mode is selected as the outlet mode, the outside air temperature is less than a predetermined value (for example, −5 ° C.) and the amount of solar radiation is A predetermined value (for example, 50 W / m²), The outlet mode may be automatically set to the DEF mode or the F / D mode.
[0080]
In this embodiment, it is fixed to the suction port mode set by the inside / outside air changeover switch 53 (for example, the suction port mode is fixed to the outside air introduction mode). Auto inside / outside air control may be performed so that the higher the temperature of TAO (Dr) and TAO (Pa), the higher the intake ratio of outside air in the passenger compartment, or the lower intake ratio of air in the passenger compartment. .
[0081]
Further, during the window anti-fogging control in the early stage of warm-up, the suction port mode may be switched to the inside air circulation mode in which the intake ratio of the vehicle interior air is very large. This control eliminates the blowing of air to the front window due to the ram pressure, and can prevent fogging of the inner surface of the front window. It should be noted that it is desirable to immediately return to the automatic inside / outside air control after the window anti-fogging control is completed. This is because the humidity in the passenger compartment increases due to the breathing of the occupant and causes fogging of the window.
[0082]
In the present embodiment, the air outlet mode is forcibly switched to the DEF leakage-free FOOT mode during the initial warm-up window anti-fogging control. However, during the initial warm-up window anti-fogging control, the F / D mode is used. Or you may make it switch forcibly to the blower outlet mode in which the blowing volume to the front window or the blowout ratio is smaller than DEF mode, such as the FO leak mode with DEF, B / L mode, or FACE mode. In these cases, the wind blown to the front window is less than that in the DEF mode, and the antifogging performance of the front window can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an overall configuration of an A / C unit (embodiment).
FIG. 2 is a front view showing a dash panel of the vehicle (embodiment).
FIG. 3 is a front view showing an air conditioner operation panel (embodiment).
FIG. 4 is a flowchart showing an example of a control program of the air conditioner ECU (embodiment).
FIG. 5 is a characteristic diagram showing a blower control voltage characteristic with respect to a target blowing temperature (embodiment).
FIG. 6 is a characteristic diagram showing air outlet mode control characteristics with respect to a target air outlet temperature (embodiment).
FIG. 7 is a flowchart showing window anti-fogging control at the initial stage of warm-up by the air conditioner ECU (embodiment).
FIG. 8 is a flowchart showing window anti-fogging control at the initial stage of warm-up by the air conditioner ECU (embodiment).
[Explanation of symbols]
    1 A / C unit
    2 Air conditioning duct
    3  Inside / outside air switching door (suction rate adjusting means)
    4 Blower (blower)
    6 Inside air inlet
    7 Outside air inlet
    9 Blower motor (actuator)
  10 Air conditioner ECU (air conditioning control means)
  20 DEF outlet
  21 FACE outlet
  22 FACE outlet
  23 FOOT outlet
  24 Driver side air outlet switching door (air outlet mode switching means)
  25 Driver's side air outlet switching door (air outlet mode switching means)
  26 Driver side air outlet switching door (air outlet mode switching means)
  28 Servo motor (actuator)
  29 Servo motor (actuator)
  31 FACE outlet
  32 FACE outlet
  33 FOOT outlet
  35 Passenger side air outlet switching door (air outlet mode switching means)
  36 Passenger side air outlet switching door (air outlet mode switching means)
  39 Servo motor (actuator)
  41 Evaporator (cooling heat exchanger)
  42 Heater core (heat exchanger for heating)
  53 Inside / outside air selector switch

Claims

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) a suction ratio adjusting means for adjusting a suction ratio of outside air into the air conditioning duct;
(G) At the start of operation of the vehicle drive means or after the start of operation,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
Until satisfying a predetermined condition, and wherein whether to operate the cooling or dehumidifying unit, or is strongly actuated to and a little to that the air conditioning control unit suction percentage of outside air into the air conditioning duct A vehicle air conditioner.

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) Before the start of air conditioning or blowing, or when the air conditioning or blowing is activated,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
An air conditioning control means for operating the cooling or dehumidifying means or forcibly operating until a predetermined time elapses;
With
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger is greater than a predetermined value,
Or when one or more of the humidity and the cloudy area of the window is below a predetermined value,
A vehicle air conditioner characterized in that it is reduced or reduced to zero .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) At the start of operation of the vehicle drive means or after the start of operation,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
An air-conditioning control means for operating the cooling or dehumidifying means until the predetermined time elapses or forcibly operating ,
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger is greater than a predetermined value,
Or when one or more of the humidity and the cloudy area of the window is below a predetermined value,
A vehicle air conditioner characterized in that it is reduced or reduced to zero .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) At the start of operation of the vehicle drive means or after the start of operation,
Until the predetermined time elapses, the operation of the blower is stopped or the air flow is made very low,
And until the predetermined time elapses, the cooling or dehumidifying means is operated or strongly operated,
Air-conditioning control means for switching to an outlet mode in which the amount of blown air to the window or the proportion of the air blow is other than the maximum;
With
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger is greater than a predetermined value,
Or when one or more of the humidity and the cloudy area of the window is below a predetermined value,
A vehicle air conditioner characterized in that it is reduced or reduced to zero .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) a suction ratio adjusting means for adjusting a suction ratio of outside air into the air conditioning duct;
(G) At the start of operation of the vehicle drive means or after the start of operation,
Until the predetermined time elapses, or to operate the front Symbol cooling or dehumidifying means, or causes strongly operated,
Until a predetermined time elapses, and a air conditioning control means you reduce the suction rate of the outside air into the air-conditioning duct,
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger is greater than a predetermined value,
Or when one or more of the humidity and the cloudy area of the window is below a predetermined value,
A vehicle air conditioner characterized in that it is reduced or reduced to zero .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) Before the start of air conditioning or blowing, or when the air conditioning or blowing is activated,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
An air conditioning control means for operating the cooling or dehumidifying means or forcibly operating until a predetermined time elapses;
With
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling means temperature of the vehicle driving means, vehicle interior temperature, solar radiation amount, window temperature, window transmission rate, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, The higher one or more of the temperatures near the heat exchanger for cooling is,
Or the lower the humidity or one or more of the window cloudy areas,
A vehicle air conditioner characterized in that it is reduced .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode ;
(F) At the start of operation of the vehicle drive means or after the start of operation,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
An air-conditioning control means for operating the cooling or dehumidifying means until the predetermined time elapses or forcibly operating ,
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling means temperature of the vehicle driving means, vehicle interior temperature, solar radiation amount, window temperature, window transmission rate, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, The higher one or more of the temperatures near the heat exchanger for cooling is,
Or the lower the humidity or one or more of the window cloudy areas,
A vehicle air conditioner characterized in that it is reduced .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) After starting the operation of the vehicle drive means,
Until the predetermined time elapses, the operation of the blower is stopped or the air flow is made very low,
And until the predetermined time elapses, the cooling or dehumidifying means is operated or strongly operated,
An air- conditioning control means for switching to a blow-out port mode in which the amount of blown air to the window or the blow-out ratio is other than the maximum ,
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling means temperature of the vehicle driving means, vehicle interior temperature, solar radiation amount, window temperature, window transmission rate, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, The higher one or more of the temperatures near the heat exchanger for cooling is,
Or the lower the humidity or one or more of the window cloudy areas,
A vehicle air conditioner characterized in that it is reduced .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) a suction ratio adjusting means for adjusting a suction ratio of outside air into the air conditioning duct;
(G) At the start of operation of the vehicle drive means or after the start of operation,
Until the predetermined time elapses, the cooling or dehumidifying means is operated or strongly operated,
Air-conditioning control means for reducing the intake rate of outside air into the air-conditioning duct until a predetermined time has elapsed ,
The predetermined time for operating the cooling or dehumidifying means or operating strongly is as follows:
Cooling means temperature of the vehicle driving means, vehicle interior temperature, solar radiation amount, window temperature, window transmission rate, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, The higher one or more of the temperatures near the heat exchanger for cooling is,
Or the lower the humidity or one or more of the window cloudy areas,
A vehicle air conditioner characterized in that it is reduced .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) Before the start of air conditioning or blowing, or when the air conditioning or blowing is activated,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
Air conditioning control means for operating the cooling or dehumidifying means until the predetermined condition is satisfied or forcibly operating
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger for the engine become a predetermined value or more,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is a predetermined value or less .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) At the start of operation of the vehicle drive means or after the start of operation,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
Air conditioning control means for operating the cooling or dehumidifying means until the predetermined condition is satisfied or forcibly operating
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger for the engine become a predetermined value or more,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is a predetermined value or less .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) At the start of operation of the vehicle drive means or after the start of operation,
Until the predetermined condition is satisfied, the operation of the blower is stopped or the air flow is made very low,
And until the predetermined condition is satisfied, the cooling or dehumidifying means is operated or strongly operated,
Air-conditioning control means for switching to an outlet mode in which the amount of blown air to the window or the proportion of the air blow is other than the maximum;
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger for the engine become a predetermined value or more,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is a predetermined value or less .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) a suction ratio adjusting means for adjusting a suction ratio of outside air into the air conditioning duct;
(G) At the start of operation of the vehicle drive means or after the start of operation,
Until the predetermined condition is satisfied, the cooling or dehumidifying means is operated or strongly operated,
Air-conditioning control means for reducing the intake ratio of outside air into the air-conditioning duct until a predetermined time elapses;
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger for the engine become a predetermined value or more,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is a predetermined value or less .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) Before the start of air conditioning or blowing, or when the air conditioning or blowing is activated,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
Air conditioning control means for operating the cooling or dehumidifying means until the predetermined condition is satisfied or forcibly operating
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger rise by a predetermined amount,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is lowered by a predetermined amount or more .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) At the start of operation of the vehicle drive means or after the start of operation,
While switching to the blowout mode with a low blowout amount or blowout ratio to the window,
Air conditioning control means for operating the cooling or dehumidifying means until the predetermined condition is satisfied or forcibly operating
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger rise by a predetermined amount,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is lowered by a predetermined amount or more .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) At the start of operation of the vehicle drive means or after the start of operation,
Until the predetermined condition is satisfied, the operation of the blower is stopped or the air flow is made very low,
And until the predetermined condition is satisfied, the cooling or dehumidifying means is operated or strongly operated,
Air-conditioning control means for switching to an outlet mode in which the amount of blown air to the window or the proportion of the air blow is other than the maximum;
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger rise by a predetermined amount,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is lowered by a predetermined amount or more .

In a vehicle air conditioner that performs air conditioning of a vehicle interior of a vehicle equipped with vehicle drive means ,
(A) an air-conditioning duct having an air outlet for blowing air-conditioned air to the window of the vehicle;
(B) a blower for generating an air flow toward the passenger compartment in the air conditioning duct;
(C) cooling or dehumidifying means having a cooling heat exchanger for cooling or dehumidifying the air flowing in the air conditioning duct;
(D) a heating heat exchanger that is installed on the air downstream side of the cooling heat exchanger and heats the air flowing in the air conditioning duct by exchanging heat with cooling water that cools the vehicle driving means;
(E) outlet mode switching means for switching the outlet mode;
(F) a suction ratio adjusting means for adjusting a suction ratio of outside air into the air conditioning duct;
(G) At the start of operation of the vehicle drive means or after the start of operation,
Until the predetermined condition is satisfied, the cooling or dehumidifying means is operated or strongly operated,
Air-conditioning control means for reducing the intake ratio of outside air into the air-conditioning duct until a predetermined time elapses;
With
The predetermined condition for stopping or weakening the operation of the cooling or dehumidifying means is
Cooling water temperature, vehicle interior temperature, solar radiation amount, window temperature, window permeability, window transmission area, seat temperature, steering temperature, heating heat exchanger temperature, cooling heat exchanger temperature, cooling One or more of the temperatures in the vicinity of the heat exchanger rise by a predetermined amount,
Alternatively, the vehicle air conditioner is characterized in that one or more of the humidity and the cloudy area of the window is lowered by a predetermined amount or more .