发明名称 |
Debris Removing Impeller Back Vane |
摘要 |
A pump having an impeller with front and back sides, for rotating on a shaft with the front side nearest an inlet and the back side nearest a motor housing, to provide a main flow of the liquid from the inlet to the outlet and a rear impeller flow of the liquid in an area between the impeller's back side and the motor housing. The back side having a logarithmic spiral-shaped vane to constantly sweep, and expel debris from, the area. The logarithmic spiral-shaped vane defined by an equation:;r=eΘ/tan(β),;where r and theta (Θ) are the radius and azimuthal angle defined using a polar coordinate system having an origin at a center point of the impeller; and beta (β) is an angle perpendicular to which a force acting on the debris will be oriented relative to a line tangent to a circle centered at the center of the impeller and extending out to the point of contact between the vane and the debris. |
申请公布号 |
US2016138605(A1) |
申请公布日期 |
2016.05.19 |
申请号 |
US201414899894 |
申请日期 |
2014.06.23 |
申请人 |
FLOW CONTROL LLC. |
发明人 |
LOPES Jeffrey D. |
分类号 |
F04D29/24;F04D13/02;F04D29/10;F04D29/42;F04D1/00;F04D29/00 |
主分类号 |
F04D29/24 |
代理机构 |
|
代理人 |
|
主权项 |
1. Apparatus, including a pump, comprising:
an impeller configured as a rotating disk having a front side and a back side, the impeller being arranged to rotate on a shaft with the front side nearest an inlet and the back side nearest a motor housing, so as to provide a main flow of liquid being pumped and a rear impeller flow of the liquid being pumped in an area between the back side of the impeller and the motor housing, the back side comprising a spiral-shaped vane configured to constantly sweep, and expel any debris from, the area between the back side of the impeller and the motor housing, the spiral-shaped vane being formed as a curve that emanates from a central point or axis of the impeller and gets progressively farther away as the curve revolves at least one complete revolution around the central point or axis. |
地址 |
Beverly MA US |