FORCED AIR-COOLING DEVICE FOR RAILWAY VEHICLE

PROBLEM TO BE SOLVED: To suppress pressure loss in an air duct and to improve a function for separating water and dust from air, in a railway vehicle where electric devices are forcibly cooled by a blower.SOLUTION: A railway vehicle includes: an air intake port provided in a vehicle body and for taking in air outside the vehicle; an air duct having an U-shaped part in which a downward flow passage in which air from the air intake port flows downward, a folding flow passage which turns an air flow direction from the downward flow passage from downward to upward, and an upward flow passage in which air from the folding flow passage flows upward are formed, and which is arranged in the vehicle body; and a blower for blowing the cooling air flowing in from the air duct to the equipment arranged on the downstream. The U-shaped part of the air duct has a flow rate increase suppression part for suppressing the increase in a flow rate in the folding flow passage.SELECTED DRAWING: Figure 1 【課題】電気装置を送風機により強制空冷する鉄道車両において、空気ダクトにおける圧力損失を抑制するとともに、空気から水や塵を分離する機能を向上させる。【解決手段】鉄道車両は、車体に設けられ、車外の空気を取り入れる空気取入口と、前記空気取入口からの空気が下方に流れる下向き流路と、前記下向き流路からの空気の流れ方向を下方から上方に転換させる折り返し流路と、前記折り返し流路からの空気が上方に流れる上向き流路とが形成されたＵ字部を有し、前記車体内に配置された空気ダクトと、前記空気ダクトから流入する空気を、下流に配置された機器に冷却風を送る送風機と、前記空気ダクトの前記Ｕ字部は、前記折り返し流路での流速増加を抑制する流速増加抑制部を有する。【選択図】図１