Cooling system for dynamoelectric machine
First Claim
1. A cooling jacket for cooling a stator of a dynamoelectric machine, the jacket comprising:
- an annular inner shell having a generally cylindric inner surface defining a cavity for receiving said stator so that the stator is in heat transfer contact with said inner surface, the inner shell having a central longitudinal axis and an outer surface;
an annular outer shell for nesting coaxial alignment with the inner shell to define an annular gap between the inner and outer shells; and
a plurality of fins formed on the outer surface of the inner shell and projecting radially outward from the outer surface into the annular gap between the inner and outer shells, said fins defining at least one flow path for conveying a fluid through the cooling jacket;
wherein at least one of the fins is positioned on the inner shell to extend in a direction circumferentially on the inner shell and substantially normal to the longitudinal axis so that the fluid flow path is directed generally circumferentially of the cooling jacket.
3 Assignments
0 Petitions
Accused Products
Abstract
A dynamoelectric machine having a cooling system for removing heat uniformly about the machine. The machine includes a cooling jacket defining a flow path for liquid coolant which extends circumferentially of the machine and which reduces loss of coolant pressure. An endshield of the machine is configured for holding electronic components in arrangement integrated with the machine. The endshield has a flow passage for receiving the coolant to remove heat from the electronic components. The flow passage of the endshield and the flow path of the cooling jacket are serially arranged so that the coolant removes heat sequentially from the electronic components and a stator of the machine.
94 Citations
15 Claims
-
1. A cooling jacket for cooling a stator of a dynamoelectric machine, the jacket comprising:
-
an annular inner shell having a generally cylindric inner surface defining a cavity for receiving said stator so that the stator is in heat transfer contact with said inner surface, the inner shell having a central longitudinal axis and an outer surface;
an annular outer shell for nesting coaxial alignment with the inner shell to define an annular gap between the inner and outer shells; and
a plurality of fins formed on the outer surface of the inner shell and projecting radially outward from the outer surface into the annular gap between the inner and outer shells, said fins defining at least one flow path for conveying a fluid through the cooling jacket;
wherein at least one of the fins is positioned on the inner shell to extend in a direction circumferentially on the inner shell and substantially normal to the longitudinal axis so that the fluid flow path is directed generally circumferentially of the cooling jacket. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A liquid-cooled dynamoelectric machine comprising:
-
a stator having a longitudinal axis;
a rotor and a shaft mounting the rotor for rotation in the stator about said axis; and
two endshields for connection at opposite longitudinal ends of the stator, at least one of the endshields having a surface for holding electronic components; and
an internal flow passage generally adjacent said surface of the endshield for conveying a coolant to remove heat from the surface and thereby cool said electronic components. - View Dependent Claims (13, 14, 15)
-
Specification