Back to results
US 10,883,507 B2Granted
Method for controlling a centrifugal pump, and associated pump system
AssigneeWilo SE
InventorStephan Schmied
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeWilo SE
InventorStephan Schmied
Estimating the term…
The invention relates to a method for controlling at least one first circulation pump (17b, 17c) of a heating or cooling system (1) having a primary circuit (2, 2a) and a secondary circuit (4, 30a) coupled therewith at a transfer point (3, 29). The first circulation pump (17, 17b, 17c, 17b′) conveys a heating or cooling medium in the primary circuit (2, 2a), and in the second secondary circuit (4, 30a), at least one second circulation pump (12, 17d) is located that conveys a heating or cooling medium in at least one partial area of the secondary circuit (4, 30a). The volume flow rate (formula I) of the first circulation pump (17, 17b, 17c, 17b′) is controlled in functional dependence on the volume flow rate (formula II) of the secondary circuit (4, 30) behind the transfer point (3, 29). In this way, a demand based, and thus an energy-efficient control of the primary-side circulation pump is achieved. The invention further relates to a pump system, comprising the at least one first and the at least one second circulation pump for carrying out the method.
Method for controlling at least one first circulation pump (17b, 17c) of a heating or cooling system (1) having a primary circuit (2, 2a) and a secondary circuit (4, 30a) coupled therewith at a transfer point (3, 29), wherein the first circulation pump (17, 17b, 17c, 17b′) conveys a heating or cooling medium in the primary circuit (2, 2a) and in the secondary circuit (4, 30a) at least one second circulation pump (12, 17d) is located that conveys a heating or cooling medium in at least one partial area of the secondary circuit (4, 30a), characterized in that the volume flow rate ({dot over (V)}pri, {dot over (V)}pri,i) of the first circulation pump (17, 17b, 17c, 17b′) is controlled in functional dependence of the volume flow rate ({dot over (V)}sec) of the secondary circuit (4, 30) behind the transfer point (3, 29).
Circulation pump (17b, 17c) for conveying a heating or cooling medium in a primary circuit (2) of a heating or cooling system (1) with a pump electronics system for determining a set point ({dot over (V)}pri,soll, {dot over (V)}pri,i,soll) characterized in that it is adjustable in its volume flow rate ({dot over (V)}pri,{dot over (V)}pri,i) and is configured for it, to calculate a volume flow set point ({dot over (V)}pri,soll, {dot over (V)}pri,i,soll) itself in functional independence of the volume flow rate ({dot over (V)}pri,soll, {dot over (V)}pri,i,soll) of at least one other circulation pump (12, 17d) for intended conveying of a heating or cooling medium in a secondary circuit (4) of the heating or cooling system (1).
Dependencies are inferred from the claim text.