Pump system and method for determining the flow in a pump system

A pump flow evaluation method for determining outlet flow of a pump system, the method comprising:

• providing the pump system, which pump system comprises at least one pump and a fluid container comprising an inlet and an outlet;
• providing a control device comprising a flow evaluation device for determining a flow through the fluid container of the pump system, the flow evaluation device being configured such that the evaluation device uses a system model and a memory configured to store data acquired in the pump system;
• acquiring data from the pump system and storing the acquired data in the memory;
• with the control device determining outlet flow by the system model which is comprised of at least two sub-models, comprised of a sub-model which describes inflow behavior of the fluid container and of a sub-model which describes outflow behavior of the fluid container;
• providing the control device with a parameter evaluation device configured to determine parameters of the sub-models on the basis of the stored data;
• and
• with the parameter evaluation device, determining parameters of the first sub-model simultaneously with determining parameters of the second sub-model.

A pump system comprising:

• at least one fluid container comprising an inlet and an outlet;
• at least one pump arranged in the inlet or in the outlet;
• and
• a control device comprising a flow evaluation device for determining a flow through the fluid container of the pump system, the flow evaluation device being configured such that the evaluation device uses a system model for determining flow, wherein:
• the system model is comprised of at least two different sub-models, comprising a sub-model which describes inflow behavior of the fluid container and a sub-model which describes outflow behavior of the fluid container;
• the control device comprises:
• a memory configured to store data acquired in the pump system, and
• a parameter evaluation device configured to determine parameters of the at least two sub-models on the basis of the stored data;
• the parameter evaluation device is configured to continuously determine parameters of the first sub-model and to continuously determine parameters of the second sub-model during a continuous operation of the pump system, based on previously measured data stored in the data memory, which data is from said continuous operation of the pump system;
• and
• the continuous determination of parameters of the first sub-model occurs simultaneously with the continuous determination of parameters of the second sub-model.