IMPELLER, CENTRIFUGAL PUMP AND ELECTRIC PUMP

摘要

An impeller is provided, which includes an upper plate, blades, and a lower plate. The blades are arranged between the upper plate and lower plate. The upper plate includes an upper surface and a lower surface, the blades are integrally formed with the upper plate by injection molding, and the blades are located at the lower surface of the upper plate. The blades include first blades. Each of the first blades includes one arc, a combination of multiple arcs, or a combination of multiple arcs and straight lines. The first blades are uniformly distributed along a circumference of the upper plate, and the first blade includes a first tail, and the first tail of the first blade make a first side of the first blade have no intersection with an outer edge of the upper plate.

主权项

1. An impeller, comprising
an upper plate, blades, and a lower plate, wherein the blades are arranged between the upper plate and the lower plate, and the upper plate comprises an upper surface and a lower surface, and the blades are fixedly connected to the lower surface of the upper plate, the blades comprise first blades, in a direction from the lower surface to the upper surface of the upper plate along an axis of the impeller, each of the first blades comprises one arc, or a combination of one arc and one plane, or a combination of more than two arcs, or a combination of more than two arcs and planes, the first blades are uniformly distributed on the upper plate, each of the first blades comprises a first side, a second side, a first head and a first tail, the first head is closer to a center of the impeller than the first tail, the first side is a concave, and the second side is a convex, a connecting portion between the first tail and the second side is arranged close to an outer edge of the upper plate or to be flush with the outer edge of the upper plate, the outer edge of the upper plate is defined as a first circumference, the diameter of the first circumference is defined as a first diameter, the first side has no intersection with the outer edge of the upper plate, the distance of a connecting portion between the first tail and the first side from the outer edge of the upper plate is greater than the distance of a connecting portion between the first tail and the second side from the outer edge of the upper plate.