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Sealing sleeve for stator of electrical machine

A sealing ring and shaft sealing technology, applied in the stator field, can solve problems such as coil leakage, cooling performance limitation, and cooling direction loss

Pending Publication Date: 2021-09-28
ROLLS ROYCE DEUT LTD & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the structural design of the collar for wave-shaped mutual flow guidance, leakage into the coil occurs at the corresponding sealing point, which leads to a hydrodynamic bypass and thus to an optimal cooling profile loss in
Due to this, the cooling performance is limited

Method used

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  • Sealing sleeve for stator of electrical machine
  • Sealing sleeve for stator of electrical machine
  • Sealing sleeve for stator of electrical machine

Examples

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Embodiment Construction

[0050] It should be noted that terms such as "axial", "radial", "tangential" etc. refer to the axes used in the corresponding figures or in the correspondingly described examples. In other words, the directions axial, radial and tangential always relate to the axis of rotation of the rotor and thus to the corresponding axis of symmetry of the stator. Here, "axial" describes a direction parallel to this axis, "radial" describes a direction orthogonal to this axis, towards said axis or also away from said axis, and "tangential" is a direction which The orientation is circular around this axis at a constant radial distance relative to this axis and at a constant axial position.

[0051] Furthermore, the terms "axial", "radial" or "tangential" in conjunction with a surface, such as a surface, shall mean that the normal vector of the corresponding axial, radial or tangential surface is along the axial, The radial or tangential direction is oriented, whereby the orientation of the ...

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PUM

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Abstract

The invention relates to a sealing sleeve for a stator of an electrical machine, said sealing sleeve being intended to ensure, inter alia, that a coolant flowing around the stator coils follows a predefined, serpentine coolant path. The sleeve has two sealing rings which are arranged on the stator with the coils of the stator lying between them. Each of the sealing rings consists essentially of a hard component and a soft component. The sleeve is arranged on the stator such that sealing sections of the soft component particularly bear against the surfaces of the stator coils and, by reason of the deformability of said sealing sections, adapt to said coil surfaces. This means that no coolant can pass between the coils and the sealing rings at these sealing locations thus formed, and therefore the desired coolant flow is guaranteed. Furthermore, the sealing rings are designed and arranged such that alternately for each coil only one of the sealing rings has a sealing section so that ultimately the serpentine coolant flow is achieved.

Description

technical field [0001] The invention relates to a stator for an electric machine and in particular to a sealing collar for such a sealing of the stator. Background technique [0002] For driving aerial vehicles, for example for airplanes or helicopters, or also for electrically driven water vehicles, etc., concepts based on electric drive systems have been investigated and used as an alternative to conventional internal combustion engines. Such electric or hybrid drive systems generally have one or more electric machines, which can be configured in the drive system as generators and / or electric motors, depending on the application. [0003] Electric drives and corresponding machines to be used for such mobile applications must be distinguished by a very high power density in order to be able to generate the required power. Power densities of the order of magnitude up to 2 kW / kg are sufficient for many technical applications, for example for the electrification of aerial veh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/20H02K3/24H02K9/197
CPCH02K1/20H02K3/24H02K9/197H02K5/203
Inventor T·阿门德T·库贝尔T·雷蒂格
Owner ROLLS ROYCE DEUT LTD & CO KG