Washing Machine Stator Mounting Structure for Better Heat Dissipation
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Solution Overview
Problem
Washing machine motors face challenges in heat dissipation, leading to reduced efficiency and potential overheating, particularly in direct drive types where the stator is mounted on the tub.
Innovation Solution
The motor design incorporates a stator core with a mounting unit featuring heat dissipation holes, connection bosses, and reinforcing ribs, along with insulators that enhance heat dissipation by creating air circulation passages and facilitating assembly, while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the stator is mounted on the tub in a direct drive washing machine, then the motor can directly transmit driving force to the drum, but heat dissipation becomes difficult leading to overheating
Solution Approach 1:
The mounting unit is divided into multiple connection bosses arranged circumferentially, with heat dissipation holes positioned between them. This segmentation allows heat to be dissipated through multiple distributed pathways rather than a single location, improving overall heat dissipation efficiency while maintaining the direct drive structure.
Solution Approach 2:
Heat dissipation holes are created by cutting through the mounting unit in the radial direction, adding a new dimension for heat escape. This allows heat to be dissipated not only through the traditional path but also radially outward through the mounting unit, creating additional heat dissipation pathways without compromising the direct drive power transmission.
2Stability of the object's composition
If the mounting unit is designed with connection bosses to secure the stator, then structural stability is improved, but heat dissipation space is reduced
Solution Approach 1:
The mounting unit features localized reinforcement ribs positioned strategically between the connection bosses. These reinforcing ribs provide structural stability in specific areas where mechanical strength is needed, while the spaces between the ribs and bosses are designed as heat dissipation channels. This allows different regions of the mounting unit to have different qualities - structural reinforcement where needed and heat dissipation pathways where appropriate.
3Ease of manufacture
If the cover protrudes less than the mounting unit, then assembly alignment is improved, but heat dissipation pathway is blocked
Solution Approach 1:
The cover acts as an intermediary element that provides alignment guidance during assembly through its positioning features, while simultaneously being designed with guide holes that allow heat dissipation pathways to remain open. The cover's design mediates between the conflicting requirements of assembly ease and heat dissipation, allowing both functions to coexist by providing alignment assistance without blocking thermal pathways.
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 design improves cooling efficiency of the stator core, preventing overheating and ensuring reliable operation, while also simplifying the assembly process by exposing guide holes for proper positioning.
Implementation Method 1
at least one heat dissipation hole to dissipate heat of the stator core is provided on the mounting unit
Data Source
AI summary
A motor for washing machines having a first insulator of the motor which surrounds a lower portion of a stator core of a stator of the motor and includes a ring-shaped mounting unit including a plurality of connection bosses so as to mount the stator on a tub of a washing machine, and at least one heat dissipation hole is provided on the mounting unit, thereby improving a cooling effect of the stator core.