公开(公告)号：EP4509770A1

公开(公告)日：2025-02-19

申请号：EP24189210.8

申请日：2024-07-17

Applicant: Danfoss A/S

Inventor： MUHIC, Miran ,  FOONG KING SOON, Derek ,  BOGAR, Sinisa

IPC: F24H15/325 ,  F24D19/10 ,  F24H15/238 ,  F24H15/414

Abstract: A device (10) for controlling a system (30) for heating and cooling is provided, the device (10) comprising at least one valve actuator (12) for a valve (14) of a bypass line (16) of the system (30), and a flow measuring device (20) for a return line (18) of the system (30), the return line (18) leading a combined flow from the bypass line (16) and a heating or cooling device return line (32) from at least one heating or cooling device (22) to at least one thermal energy source (24), the flow measuring device (20) being configured to determine and provide at least one actual flow value of the combined flow, wherein the valve actuator (12) is configured to receive the actual flow value and to control the valve (14) based on the actual flow value, the valve actuator and the flow measuring device comprising a direct signal connection between each other, wherein the valve actuator (12) comprises a motor (40) connected to the valve (14) and a processing unit (42) for receiving the actual flow value and for providing at least one motor position value for the motor (40) based on the actual flow value, wherein the processing unit (42) comprises a PID controller (38) to control the valve (14), the input of the PID controller being the difference between a minimum flow value and the actual flow value, the output of the PID controller being a calculated set point flow value. The device (30) to control a system for heating or cooling is easier to handle and has reduced costs.