公开(公告)号：US20240418172A1

公开(公告)日：2024-12-19

申请号：US18701510

申请日：2022-10-27

Applicant: GRUNDFOS HOLDING A/S

Inventor： Robert GREVE ,  Kristian ABILDGAARD

IPC: F04D15/00

Abstract: The invention relates to a method of controlling a power limit (P) of a circulating pump (1) comprising a critical component (4) and a first temperature sensor (5) arranged and configured to measure the temperature of the critical component. The first temperature sensor may be arranged on top of, below, integrated with, or in the vicinity of the critical component. The method comprises monitoring the temperature (T) of the critical component by use of the first temperature sensor and using an output signal (6) from the first temperature sensor as a first temperature input signal (7) to a controller (8). By use of the controller and based on the first temperature input signal, the power limit of the circulating pump is controlled in accordance with a performance derating curve for the circulating pump. The invention further relates to a system (3) for controlling a power limit of a circulating pump by use of such a method.