Cooling system and cooling method for cooling rotating electrical machine
AssigneeFanuc Corporation
InventorsShinobu Takano, Yohei Arimatsu
Life of this patent
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Abstract
A cooling system and a cooling method, capable of reducing a temperature gradient of a rotating electrical machine by means of a simple structure, in relation to both axial and circumferential directions thereof. The cooling system has a coolant conveying device such as a pump, and a coolant cooling device such as a heat pump. The conveying device is fluidly communicated with a flow path via a coolant pipe 32, whereby a circulatory coolant path is formed in which coolant conveyed from the pump flows in the path of a jacket and returns to the pump. The coolant conveying device is configured to reverse the flow direction of coolant, whereby the flow direction in the flow path can be properly reversed.
Claims5
A cooling system for cooling a rotating electrical machine, comprising:
- a coolant cooling device which cools coolant;
- a coolant conveying device connected to the coolant cooling device, the coolant conveying device being configured to convey coolant cooled by the coolant cooling device;
- and
- a spiral coolant flow path fluidly connected to the coolant conveying device, the coolant flow path being positioned adjacent to an outer circumferential surface of a stator of the rotating electrical machine,
- wherein the rotating electrical machine has a reversing device which reverses a flow direction of coolant in the flow path based on a predetermined condition.
A method for cooling a rotating electrical machine, by using a coolant cooling device which cools coolant;
- a coolant conveying device configured to convey coolant cooled by the coolant cooling device;
- and a spiral coolant flow path, in which coolant flows, positioned adjacent to an outer circumferential surface of a stator of the rotating electrical machine, the method comprising the step of:
- reversing a flow direction of coolant in the flow path based on a predetermined condition.
Dependencies are inferred from the claim text.