To provide a ventilation duct which can separate foreign objects and inhibit a fluid from flowing out from an area other than an exhaust port.SOLUTION: A ventilation duct 10 is provided with a wall part 70 bending from a lower surface 50b of a duct inner surface 50, standing upward, and extending in a lateral direction when viewed from the upstream side in a direction of a fluid flowing in a fluid passage 60 (an A direction in the figure). Thus, foreign objects 91 flowing into the fluid passage 60 from an air intake port 20 are run into the wall part 70 to be separated from a main stream 90 of the fluid. In the structure, the wall part 70 is provided and the foreign objects 91 are run into the wall part 70 to be separated, and thus a hole (a foreign object discharge port) for discharging the foreign objects 91 is not needed between the air intake port 20 and the exhaust port 30. Therefore, the fluid, which flows in the ventilation duct 10 and is other than the foreign objects 91, is inhibited from flowing to the outside of the ventilation duct 10 from a portion other than the exhaust port 30.SELECTED DRAWING: Figure 3
【課題】異物を分離でき、流体が排気口以外から流出してしまうことを抑制できる、通気ダクトの提供。【解決手段】流体流路60を流れる流体の流れ方向の上流側から見たとき(図のA視で)、ダクト内面50の下面50bから折れて上方に立ち上がるとともに左右方向に延びる壁部70が設けられている。そのため、吸気口20から流体流路60に流入してきた異物91を壁部70に衝突させて流体の主流90から分離することができる。この構成では、壁部70を設けて異物91を壁部70に衝突させて分離するため、吸気口20と排気口30との間で異物91を排出するための孔(異物排出口)は不要である。よって、異物91以外の通気ダクト10を流れる流体が排気口30以外の部位から通気ダクト10の外に流出することを抑制できる。【選択図】 図3
VENTILATION DUCT
通気ダクト
2019-05-23
Patent
Electronic Resource
Japanese
IPC: | F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |