Stator for an electrical machine with liquid cooling
First Claim
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1. A stator for an electrical machine, comprising:
- a laminate stack defining an axis and having formed therein cooling channels extending substantially in a direction of the axis;
a heat source;
cooling pipes inserted into the cooling channels; and
a force-applying means rendered effective through deformation of the laminate stack to press the cooling pipes in the cooling channels against a side which faces the heat source.
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Abstract
The invention relates to a stator (2), in particular for a housing-less electrical machine (1), wherein substantially axially running cooling channels (3, 13) are located in the stator (2), into which channels cooling pipes (4, 6, 7) can be inserted and, at least in sections, means are provided which, by means of deformation of the cooling channels (3, 13), cause the cooling pipes (4, 6, 7) to be pressed against the cooling channel (3, 13) on the side facing the heat sources of the electrical machine (1); efficient liquid cooling is therefore provided.
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Citations
11 Claims
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1. A stator for an electrical machine, comprising:
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a laminate stack defining an axis and having formed therein cooling channels extending substantially in a direction of the axis; a heat source; cooling pipes inserted into the cooling channels; and a force-applying means rendered effective through deformation of the laminate stack to press the cooling pipes in the cooling channels against a side which faces the heat source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A process for the manufacture of a stator, comprising the steps of:
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punching electrical steel laminations with a geometrical contour to define cooling channels formed with a hump, knob, or dent; stacking the laminations in a way to align the cooling channels in an axial direction and to form a laminate stack; axially inserting cooling pipes into the cooling channels of the laminate stack; and applying a force on an outer side of the laminate stack to thereby press the cooling pipes against a side in the cooling channels in proximal relationship to a heat source.
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Specification