To make front surface wind speed distribution of cooling air as uniform as possible even in a grid box configured such that a discharge port center of a centrifugal blower and the center of the air channel front surface of a cooling air passage provided with a resistor are dislocated.SOLUTION: A current plate is disposed in a duct connecting a discharge port of a centrifugal blower and an inlet port of a cooling air passage of a housing frame, and thus a drift current is introduced to bring the flow closer to a more uniform flow. A current plate is provided introducing air for variations in wind speed distribution in each of a flow passage width direction and a flow passage height direction of the discharge port of the centrifugal blower. In a dump truck (transportation vehicle) for mine with the centrifugal blower, variations in wind speed distribution in the discharge port of the centrifugal blower are reduced, and thermal dissipation (cooling performance) of a resistor is improved.SELECTED DRAWING: Figure 8
【課題】遠心ブロワの吐出口中心と抵抗器を設けた冷却風路の風路前面における中心がずれた配置構成となるグリッドボックスでも冷却風の前面風速分布を均一に近づける。【解決手段】遠心ブロワの吐出口と筐体枠の冷却風路の入口を接続するダクト内に整流板を設置し、偏った流れを導風してより均一な流れに近づける。遠心ブロワの吐出口の流路幅方向と流路高さ方向の風速分布のばらつきに対してそれぞれ導風する整流板を設ける。遠心ブロワを備えた鉱山用のダンプトラック(運搬車両)において、遠心ブロワの吐出口における風速分布のばらつきを低減し、抵抗器の放熱性(冷却性)を向上させる。【選択図】図8
TRANSPORTATION VEHICLE
運搬車両
2023-06-23
Patent
Electronic Resource
Japanese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS / H05K PRINTED CIRCUITS , Gedruckte Schaltungen |
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