Redundant cooling system with two cooling circuits for an electric motor
AssigneeSiemens Aktiengesellschaft
InventorsHans-Jürgen Tölle, Reinhard Vogel, Peter Wengler
Life of this patent
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Abstract
A redundant cooling device, for an electrical submarine drive motor, includes a first cooling circuit and a second cooling circuit, by which thermal energy may be removed from the electric submarine drive motor. A high degree of operational security and redundancy may be provided, whereby the coolant in the first cooling circuit and the second cooling circuit flow counter-currently through a stator cooling circuit in the region of the electrical submarine drive motor.
Claims20
A redundant cooling device for an electric submarine drive motor, comprising:
- a first liquid cooling circuit and a second liquid cooling circuit being functionally independent of each other and adapted to transport thermal energy away from the electric submarine drive motor, wherein the first liquid cooling circuit and the second liquid cooling circuit are adapted to flow a liquid coolant in a counter-current through a stator cooling ring of the electric submarine drive motor, in a region of the electric submarine drive motor, and wherein a main pump and a minor pump, the minor pump being a lower power pump than the main pump, are arranged in each cooling circuit and are functionally independent of each other, and the main pump and the minor pump of each cooling circuit include supply voltages that are functionally independent of each other.
A redundant cooling device for an electric submarine drive motor, comprising:
- a first liquid cooling circuit and a second liquid cooling circuit being functionally independent of each other and adapted to transport thermal energy away from the electric submarine drive motor, wherein the first liquid cooling circuit and the second liquid cooling circuit are adapted to flow a liquid coolant in a counter-current through a stator cooling ring of the electric submarine drive motor, in a region of the electric submarine drive motor, and wherein a main pump and a minor pump, the minor pump being a lower power pump than the main pump, are arranged in each cooling circuit and are functionally independent of each other, and the main pump and the minor pump of each cooling circuit include supply voltages that are independent of each other, wherein the redundant pump units, heat exchangers, fittings, and valves are arranged on the upper part of the electric submarine drive motor and the two cooling circuits each have a cooling branch, by which inverter modules assigned to the submarine drive motor are coolable.
Dependencies are inferred from the claim text.