Motor Rotor Holder with Integrated Cooling Channels
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Solution Overview
Problem
Conventional motor cooling methods, especially in harsh environments, become complex and costly due to the need for independent circulation components and external coolers, which complicates the motor system structure and increases costs.
Innovation Solution
A motor rotor holder with integrated first and second cooling channels, where heat dissipation fins are helically arranged to facilitate heat exchange between the primary and secondary cooling media, allowing for efficient heat transfer and discharge without external coolers, using a common heat conduction portion and fans to drive circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an independent circulation component and external cooler are used for motor cooling, then cooling reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the circulation component and cooler functions directly into the rotor holder structure. The rotor holder integrates a circulation channel for the first cooling medium and incorporates cooling fin structures that act as the cooler, eliminating the need for separate independent circulation components and external coolers. This merging maintains cooling reliability while significantly simplifying the overall system structure.
Solution Approach 2:
The rotor holder is designed to perform multiple functions simultaneously: it supports the rotor, provides structural stability, serves as a circulation component with integrated channels for cooling medium flow, and functions as a cooler through its built-in cooling fins. This multi-functionality reduces the number of separate components needed while maintaining effective cooling performance.
2Reliability
If an independent circulation component and external cooler are used for motor cooling, then cooling effectiveness is improved, but manufacturing cost increases
Solution Approach 1:
By merging the cooler function into the rotor holder structure, the patent eliminates the need for separate external cooler components and their associated mounting hardware. The circulation channels are formed within the rotor holder itself, reducing the number of parts that need to be manufactured, assembled, and sealed, thereby lowering manufacturing costs while maintaining cooling effectiveness.
Solution Approach 2:
The rotor holder serves multiple purposes including structural support, rotor mounting, and thermal management through integrated cooling channels and fins. This consolidation reduces the total component count and assembly complexity, leading to lower manufacturing and assembly costs while achieving effective cooling.
3Reliability
If a sealed closed loop primary cooling circuit is used in harsh environments, then cooling system reliability is improved, but device complexity increases due to secondary cooling circuit requirements
Solution Approach 1:
The patent integrates the secondary cooling function directly into the rotor holder structure through cooling fins that are in thermal contact with the first cooling medium circulation channel. This allows heat exchange between the primary and secondary cooling media without requiring separate external cooler components or complex piping, maintaining system reliability in harsh environments while simplifying the overall cooling circuit architecture.
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 solution simplifies the motor system structure, reduces costs by eliminating external coolers, and enhances cooling efficiency by direct heat exchange between the primary and secondary cooling media, effectively managing heat generated within the motor.
Implementation Method 1
the first cooling channel and the second cooling channel are provided to have a common heat conduction portion, so that during operation of the motor the first cooling medium circulating in the first cooling channel and the second cooling medium circulating in the second cooling channel can exchange heat with each other through the common heat conduction portion
Implementation Method 2
one or more heat dissipation fins are provided on at least one of the first cooling channel and the second cooling channel
Implementation Method 3
the first cooling medium circulating in the first cooling channel and the second cooling medium circulating in the second cooling channel can exchange heat with each other through the common heat conduction portion
Data Source
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AI summary
A motor rotor holder and a motor are provided according to the present application. The motor rotor holder is rotatably supported in a housing of the motor, and the motor rotor holder includes: a first cooling channel which allows interior spaces at two axial sides of a rotor in the housing to be in communication with each other so as to direct a first cooling medium through the first cooling channel; and a second cooling channel which is in communication with an exterior of the housing so as to direct a second cooling medium through the second cooling channel. The first cooling channel and the second cooling channel are provided to have a common heat conduction portion, and the first cooling medium is allowed to exchange heat with the second cooling medium via the common heat conduction portion, so as to transfer heat absorbed by the first cooling medium from an interior of the housing to the second cooling medium and discharge the heat to the exterior of the housing. Thus, a cooling effect on an interior of the motor can be improved.