Twin Laundry Drive Unit Cooling and Non-Overlapping Motor Control
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Solution Overview
Problem
Conventional twin laundry machines face issues with overlapping motor operations and inadequate heat radiation in the second washing unit, leading to vibration, power consumption increases, and potential motor damage due to high-temperature exposure.
Innovation Solution
A twin laundry machine design with independent motor operation control and an enhanced heat radiation system, featuring a rotor with an integral air inlet structure and embossing to efficiently suck and direct external air for effective cooling of the stator and motor components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If both washing units operate simultaneously, then productivity increases, but vibration and power consumption increase due to overlapping motor operations
Solution Approach 1:
The control system implements periodic operation cycles where the first washing unit operates during a first time period and the second washing unit operates during a second time period, with the periods being non-overlapping. This periodic scheduling allows both units to be utilized for washing (maintaining productivity) while preventing simultaneous motor operation that causes vibration and excessive power consumption.
2Device complexity
If the motor is positioned close to the washing tub for compact design, then device complexity is reduced, but heat radiation to motor increases
Solution Approach 1:
The patent introduces an intermediate thermal management structure where the drive unit acts as a thermal barrier between the washing tub and the motor. The drive unit includes a drive case that houses the motor and is thermally isolated from the washing tub interior. This intermediate structure allows compact positioning while protecting the motor from direct heat exposure during high-temperature washing cycles.
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
The solution prevents motor overlap, reduces vibration and power consumption, and enhances the reliability and durability of both washing units by effectively cooling the drive unit, especially in high-temperature environments.
Implementation Method 1
a rotor with an integral air inlet structure and embossing to efficiently suck and direct external air for effective cooling of the stator and motor components
Implementation Method 2
improved the function of heat-radiation performed by a drive for driving a drum
Data Source
AI summary
The present disclosure relates to a twin laundry machine, more particularly, to a twin laundry machine configured to control mutual motor operations of one or more laundry machines provided therein not to be overlapped with each other, in case the one or more laundry machines are put into operation to perform washing. The present disclosure also relates to a twin laundry machine of which a motor for driving a drum has an improved heat radiation function, more particularly, to a twin laundry machine which includes a sub-washing machine with a smaller size than a normal washing machine and frequent exposure to high temperature usage environments.