Circulation pump, heating system and method of determining the flow rate of a liquid through a pipe
First Claim
1. Circulation pump for a conveyed liquid, comprising:
- an electric motor, which is electronically commutated and has a rotor, a stator and a motor circuit; and
an impeller that is connected in a rotationally fixed manner to the rotor;
wherein the electric motor has an evaluation device, by means of which a flow rate of conveyed liquid through the circulation pump is determinable from at least one of a rotational speed of the rotor and a power consumption of the electric motor, and at least one signal output is provided, at which at least one of a flow rate signal and flow rate-dependent switching signal is suppliable by the circulation pump.
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Accused Products
Abstract
In order to provide a circulation pump for a conveyed liquid, comprising an electric motor, which is electronically commutated and has a rotor, a stator and a motor circuit, and an impeller that is connected in a rotationally fixed manner to the rotor, with advantageous properties, it is provided that the electric motor has an evaluation device, by means of which a flow rate of conveyed liquid through the circulation pump can be determined from a rotational speed of the rotor and/or a power consumption of the electric motor, and at least one signal output is provided, at which a flow rate signal and/or flow rate-dependent switching signal can be supplied by the circulation pump.
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Citations
27 Claims
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1. Circulation pump for a conveyed liquid, comprising:
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an electric motor, which is electronically commutated and has a rotor, a stator and a motor circuit; and an impeller that is connected in a rotationally fixed manner to the rotor; wherein the electric motor has an evaluation device, by means of which a flow rate of conveyed liquid through the circulation pump is determinable from at least one of a rotational speed of the rotor and a power consumption of the electric motor, and at least one signal output is provided, at which at least one of a flow rate signal and flow rate-dependent switching signal is suppliable by the circulation pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. Heating system for heating a liquid in a basin, comprising:
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a flow-through region for liquid that is positioned outside a liquid receiving space of the basin; a heater that is disposed at the flow-through region; a control device for the heater; and a circulation pump for conveying the liquid through the flow-through region, wherein at least one signal output of the circulation pump is connected in a signal-effective manner to the control device; said circulation pump comprising; an electric motor, which is electronically commutated and has a rotor, a stator and a motor circuit; and an impeller that is connected in a rotationally fixed manner to the rotor; wherein the electric motor has an evaluation device, by means of which a flow rate of conveyed liquid through the circulation pump is determinable from at least one of a rotational speed of the rotor and a power consumption of the electric motor, and at least one signal output is provided, at which at least one of a flow rate signal and flow rate-dependent switching signal is suppliable by the circulation pump.
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23. Method of determining the flow rate of a liquid through a pipe, comprising:
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conveying the liquid by means of a circulation pump, which has an electronically commutated electric motor; determining the flow rate by means of an evaluation device, which is integrated into the circulation pump, from at least one of the rotational speed of a rotor of the electric motor and from the motor power; and supplying at least one of a flow rate signal and flow rate-dependent switching signal by the circulation pump. - View Dependent Claims (24, 25, 26, 27)
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Specification