IMPELLER AND HOUSING ASSEMBLY WITH REDUCED NOISE AND IMPROVED AIRFLOW

An impeller and housing assembly with reduced noise and improved airflow includes a volute (64), a shaft (50), a housing (52), a central axis (65), and an inlet port (66) located along the central axis (65). An outlet port (68) is located on a second axis (69) spaced from the central axis (65). An exhaust passage (70) extends from the outlet port (68). The impeller (72) is mounted on the shaft (50) for rotation. The impeller (72) includes a hub (73), and at least one blade (74) extending from the hub (73). The blade (74) has a distal surface (76) spaced from the shaft (50). The impeller housing has a first plane (78) which is approximately perpendicular to the central axis (65). The first plane (78) contacts the blade distal surface (76). A second plane (79) is parallel to and spaced apart from the first plane (78). The second plane (79) contacts a wall (80) of the outlet port (68) at a location closest to the first plane (78). A spacing wall (90) is positioned between the volute (64) and the outlet port (68) and spaces each blade (74) from the outlet port (68), thus reducing noise and increasing airflow. An impeller and housing assembly with reduced noise and improved airflow includes a volute, a shaft, a housing, a central axis, and an inlet port located along the central axis. An outlet port is located on a second axis spaced from the central axis. An exhaust passage extends from the outlet port. The impeller is mounted on the shaft for rotation. The impeller includes a hub, and at least one blade extending from the hub. The blade has a distal surface spaced from the shaft. The impeller housing has a first plane which is approximately perpendicular to the central axis. The first plane contacts the blade distal surface. A second plane is parallel to and spaced apart from the first plane. The second plane contacts a wall of the outlet port at a location closest to the first plane. A spacing wall is positioned between the volute and the outlet port and spaces each blade from the outlet port, thus reducing noise and increasing airflow. Un ensemble turbine et carter moins bruyant et à circulation d'air améliorée comprend une volute, un arbre, un carter, un axe central et un orifice d'introduction situé le long de l'axe central. Un orifice de sortie est situé sur un deuxième axe à distance de l'axe central, un passage d'évacuation partant de l'orifice de sortie. La turbine est montée sur l'arbre pour tourner, la turbine comprenant un moyeu d'où part au moins