Electrodynamic Machine Stator Rotor Plate Segment Blocks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrodynamic machine stators and rotors face limitations in minimizing structural size for a given torque and increasing torque for a fixed size due to space constraints for coil winding, and poor heat dissipation resulting from gaps between plate segments and housing, leading to overheating.
Innovation Solution
The stator or rotor is composed of stacked part-annular plate segments forming blocks, allowing for pre-loading of coil assemblies and precise alignment with connecting sections that reduce the diameter, enabling higher coil filling efficiency and direct contact with a clamping housing for improved heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If plate segments are stacked to form a ring with housing pushed onto outer circumference, then structural stability is achieved, but gaps remain between plate segments and housing causing poor heat transfer
Solution Approach 1:
A clamping device acts as an intermediary between the plate segments and the housing. The clamping device includes clamping elements that can be moved between a release position and a clamping position. When in the clamping position, the clamping elements reduce the inner diameter of the housing, forcing the housing to contact the plate segments directly and eliminating gaps. This intermediary mechanism enables both structural stability and efficient heat transfer simultaneously.
2Quantity of substance
If coil assemblies are wound after plate segment ring is mounted, then space constraints are addressed, but only small degree of filling (35-40%) can be achieved
Solution Approach 1:
The patent applies preliminary action by providing pre-wound coil assemblies before the plate segment ring is mounted. These pre-wound coil assemblies are then inserted into the interior space defined by the assembled plate segments. This approach achieves higher filling efficiency (greater than 70%) compared to winding after assembly, while the clamping device ensures proper positioning and contact during this pre-assembly process.
3Stability of the object's composition
If plate segments are stacked offset from one another, then structural stability is improved, but space for coil assemblies is reduced
Solution Approach 1:
The clamping device serves as a mediator that allows plate segments to be stacked in a more space-efficient arrangement while maintaining stability through the clamping action rather than offset positioning. The clamping elements apply radial force to hold the stacked plate segments together, enabling tighter stacking that maximizes interior space for coil assemblies while still providing sufficient structural stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for a significant increase in torque with the same size or a reduction in size for comparable torque, while ensuring efficient heat dissipation and simplified assembly, optimizing power and size of the electrodynamic machine.
Implementation Method 1
the connecting sections are connected in such a way are designed so that they can be fixed to one another while reducing a diameter and/or an external dimension of the plate segment blocks connected to one another
Implementation Method 2
there is no direct contact between the plate segments and the housing in many places, so that the heat transfer from the plate segments to the stator is correspondingly poor
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a stator (32, 132, 232) or rotor for an electrodynamic machine, particularly for a torque motor as an internal or external rotor, comprising a plurality of partially ring-shaped plate segments (10, 110, 210) that are stacked such that a plurality of partially ring-shaped plate segment blocks (34, 134, 234) are formed. Combined into a ring, said plate segment blocks form the stator (32, 132, 232) or rotor, wherein adjacent plate segment blocks (34, 134, 234) are braced against one another by a bracing device. The bracing device may already be integrated into the plate segment blocks (34, 134, 234) or may be formed by a housing (145, 245), the housing segments (148, 248) of which may be braced against one another. If the housing (145) is placed externally around the stator (132), for example, the inner diameter of the housing (145) may be varied during installation of the stator (132) or rotor such that the housing (145) may be positioned around the mounted plate segment blocks (34, 134) and may be radially braced against said plate segment blocks.