Non-Circular Drum Laundry Apparatus with Circular Guide Support
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Solution Overview
Problem
Drying machines face challenges in securing maximum space for the drum due to its rotational nature, which limits the efficient movement and treatment of laundry.
Innovation Solution
A laundry treating apparatus with a rotatable drum having a non-circular closed cross-section, supported by upper and lower circular guides with uniform curvature, allows for efficient rotation and agitation of laundry while maintaining a large receiving space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a drum is designed to rotate in a drying machine, then the drum can perform drying function, but the space for receiving laundry is limited
Solution Approach 1:
The drum is designed with a non-circular cross-section (oval, rectangular, or square shape) instead of a traditional circular shape. This asymmetric geometry allows the drum to occupy more space within the drying machine chamber while still rotating effectively, thereby increasing the laundry receiving capacity without compromising the drying function.
Solution Approach 2:
The invention transitions from a two-dimensional circular cross-section to a three-dimensional non-circular cross-section (oval, rectangular, or square). This dimensional change enables the drum to utilize space more efficiently in multiple directions, maximizing the volume available for laundry while maintaining rotational capability.
2Volume of moving object
If a drum has a non-circular cross-section, then the space for receiving laundry is maximized, but the drum rotation becomes more complex
Solution Approach 1:
Circular guides are introduced as intermediary components between the non-circular drum and the rotation mechanism. These circular guides constrain and guide the drum's movement, ensuring smooth rotation while accommodating the non-circular cross-section. The guides act as mediators that simplify the rotation mechanism by providing a fixed circular path for the drum to follow.
Solution Approach 2:
The invention uses circular guides with curved paths to accommodate the non-circular drum. The circular geometry of the guides provides a smooth, continuous rotation path that simplifies the mechanical complexity compared to other possible mechanisms. The curvature of the guides ensures that the drum rotates evenly while maintaining contact with the support surfaces.
3Stability of the object's composition
If circular guides are added to support the drum, then the drum rotation is stabilized, but the device complexity increases
Solution Approach 1:
Instead of making the entire drum structure complex, the invention applies circular guides only at specific locations where support and stabilization are needed. The guides are positioned to contact specific portions of the non-circular drum cross-section, providing localized stabilization without requiring complex mechanisms throughout the entire structure.
Solution Approach 2:
Rather than making the drum itself circular to simplify rotation, the invention inverts the approach by making the drum non-circular to maximize space and using circular guides to achieve the rotation stability. This reversal of the traditional design approach allows both space maximization and rotation stability to be achieved simultaneously.
Data Source
AI summary
The present invention relates to a laundry treating apparatus that smoothly agitates laundry with as large space as possible for receiving laundry. The laundry treating apparatus includes: a rotatable drum that receives laundry, has open front and rear, and is formed to have a non-circular closed cross-section; a rotatable upper circular guide that is disposed with the rotational center higher than the rotational center of the drum and supports a portion having a uniform curvature at the upper portion of the drum; a rotatable lower circular guide that is disposed with the rotational center lower than the rotational center of the drum and supports a portion having a uniform curvature at the lower portion of the drum; and a driving mechanism rotating the drum by rotating the upper circular guide or the lower circular guide.