Impeller seat with a guide pin for a pump

US11994149B2 · kind B2 · utility

Assignee

• Xylem Europe GmbH · CH

Inventors

• Viktor Bredwad · Vilhelmina, SE
• Stefan Ramström · Vallentuna, SE

Key dates

• Filing date: Oct 25, 2021
• Grant date: May 28, 2024
• Expiry date: Oct 25, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2260/607
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An impeller seat for a pump, the impeller seat comprising an inlet wall, an inlet radius, a guide pin connected to and extending radially inwards from the inlet wall. The guide pin includes a tip radius. A 15%-circle is offset radially inwards from a circular intersection fifteen percent of the difference between the inlet radius and the tip radius. An 85%-circle is offset radially inwards from the circular intersection eighty-five percent of the difference between the inlet radius and the tip radius. A trailing edge line is between the intersection between the 15%-circle and a trailing edge of the guide pin and the intersection between the 85%-circle and the trailing edge of the guide pin. The trailing edge line is in a range equal to or more than 10 degrees and equal to or less than 30 degrees.