Dual-Tub Washing Machine Layout for Simultaneous Front and Top Loading
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Solution Overview
Problem
Traditional washing machines require multiple cycles to wash and sort laundry, leading to inefficient use of time and space, especially when dealing with small loads, as they typically have a single washing apparatus.
Innovation Solution
A washing machine design incorporating two washing apparatuses, one front-loading and one top-loading, within a single housing, allowing for simultaneous operation and efficient use of space, with the front-loading tub inclined downward and the top-loading tub positioned above, enabling separate laundry sorting and washing without the need for multiple machine runs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single washing apparatus is used, then the device complexity is low, but the productivity decreases due to multiple machine runs required for sorting laundry
Solution Approach 1:
The patent combines a top-loading washing machine and a front-loading washing machine into a single integrated housing, creating a dual-washing-machine system that allows simultaneous operation of both apparatuses, thereby improving productivity and laundry sorting capability
Solution Approach 2:
The washing system is segmented into two independent washing apparatuses (top-loading and front-loading) with separate drums, tubs, and driving mechanisms, allowing each to operate independently for different laundry types simultaneously
2Productivity
If two washing apparatuses are integrated in one housing, then the productivity increases, but the device complexity increases
Solution Approach 1:
The integrated housing serves multiple functions by accommodating both top-loading and front-loading washing machines, providing a universal platform that handles various laundry types simultaneously without requiring separate machines
Solution Approach 2:
The patent employs a nested configuration where the second tub is disposed above the first tub within the same housing, and the driving shaft penetrates the second tub to reach the second drum, creating a space-efficient layered structure
3Volume of stationary object
If the second tub is disposed above the first tub, then the space utilization is optimized, but the manufacturing precision requirements increase for proper alignment
Solution Approach 1:
The patent transitions from horizontal placement to vertical stacking of the two tubs, utilizing the vertical dimension within the housing to achieve compact space utilization while maintaining independent access to each washing apparatus
4Ease of manufacture
If the driving shaft penetrates the second tub, then the ease of manufacture is improved by simplifying the drive mechanism, but the reliability may be affected by additional penetration points
Solution Approach 1:
The driving shaft is extracted through the second tub to directly connect with the second drum, eliminating the need for complex transmission mechanisms and simplifying the drive system while maintaining structural integrity through proper sealing and support
Data Source
AI summary
A washing machine including a first tub accommodated in a housing and formed by assembling a first member disposed in the front portion with a second member disposed in the rear portion; a second tub disposed above the first tub, a drum rotatably disposed in the inside of the second tub; and a driving shaft connected to the drum, configured to transfer a driving force to the drum and located further behind than an engaged portion of the first member and the second member of the first tub.