PROBLEM TO BE SOLVED: To eliminate discomfort due to air-conditioning air "a" continuously blown to a certain position.SOLUTION: In a duct D for blowing air-conditioning air to an instep of a foot of a vehicle occupant, a protrusion 12 pointed inward is provided on an inner surface near an opening 11 of the duct. When air-blowing speed is high (more air-blow amounts) at the initial time after the occupant gets in the vehicle, blown air gets over the protrusion 12 and is separated and then keeps going, and contacts a prescribed area, for instance the instep of the foot and conditions air on the instep. While, when the air-blowing speed is low (less air blow amounts), blown air contacts the protrusion 12 and then re-adheres to a surface of the peeled protrusion by Coanda effect. More specifically, a direction in which the air goes is expanded outward when the air-blowing speed is low more than when the speed is high. This can expand a blowing-out region, which prevents the blown air from being concentrated on a certain region such as the instep of the foot, so that foot sweat and the like are hardly caused, in a case of a foot duct for instance. A shape of a peripheral edge of a surface directed toward the opening of the duct of the protrusion may be formed in a circular arc-shape and an inclination angle α (<20 degrees) at a front side in an air-blowing direction in the shape of the surface of the protrusion 12 can be set larger than an inclination angle β at a rear side therein.SELECTED DRAWING: Figure 2

    【課題】一定箇所に空調空気aが吹きつけ続ける不快感をなくす。【解決手段】車両搭乗者の足の甲部分への空調空気送付用ダクトDである。そのダクトの開口11近くの内面に内方に向く突起12を設ける。搭乗初期の送風速度が高いと(送風量が多いと)、送風は突起12を乗り越えて剥離してそのまま進んで、所定の域、例えば、足の甲に当たって、速やかに空調する。一方、送風速度が低いと(送風量が少ないと)、送風は突起12に当たった後、コアンダ効果により前記剥離した突起表面に再付着する。すなわち、進行方向が前記送風速度が高いときに対して外側に拡がる。このため、吹き出し領域が拡がり、例えば、フットダクトの場合、送風が足の甲等の一定領域に集中し難くなり、足蒸れ等が生じにくくなる。前記突起のダクト開口に向かう表面周縁形状を円弧状としたり、突起12の表面形状の送風方向の手前側傾斜角度α(<20度)を後側傾斜角度βより大きくしたりすることができる。【選択図】図2


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    Titel :

    AIR-CONDITIONING DUCT STRUCTURE FOR AUTOMOBILE


    Weitere Titelangaben:

    自動車用空調ダクト構造


    Beteiligte:
    NARA YUSUKE (Autor:in) / TOMITA SHINSAKU (Autor:in) / KATO MASAYA (Autor:in)

    Erscheinungsdatum :

    2018-11-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F24F Klimatisierung , AIR-CONDITIONING



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