Laundry Dryer Base Design to Prevent Condensed Water Reheating
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Solution Overview
Problem
Conventional laundry dryers face issues with vibration and noise due to the deformation of the rear panel, leading to misalignment of the rotating shafts and reduced reliability of the reducer, and they lack control over the rotating direction and velocity of the drum, affecting drying efficiency.
Innovation Solution
A laundry treating apparatus with a driving unit where the center of rotation of the rotor and the drum form a concentric axis, allowing for direct connection and stable rotation, and a base design that prevents water condensation from being reheated, enabling effective air circulation and water collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the driving unit is fixed to the rear panel of the cabinet, then the drum can be rotated, but the rear panel deforms under load causing misalignment of rotating shafts and reduced reliability
Solution Approach 1:
The cabinet is divided into a rigid base portion and a separate rear panel portion. The driving unit is mounted on the rigid base rather than the deformable rear panel, separating the load-bearing function from the panel structure. This segmentation prevents deformation transmission to the driving unit while maintaining drum rotation capability.
Solution Approach 2:
The driving unit is extracted from the rear panel mounting and repositioned to the base of the cabinet. This removes the driving unit from the deformable structure, eliminating the source of misalignment and reliability issues while preserving its rotational function.
2Speed
If the driving unit is fixed to the rear panel, then the drum can rotate, but vibration and noise increase due to shaft misalignment
Solution Approach 1:
By segmenting the cabinet structure into rigid base and separate rear panel, and mounting the driving unit on the rigid base, the system isolates the vibration-generating components from the deformable panel. This maintains rotation speed while minimizing vibration and noise transmission.
3Reliability
If a tub is added to the cabinet to fix the driving unit, then the driving unit can be securely mounted, but the dryer structure becomes more complex
Solution Approach 1:
Instead of adding a tub structure to accommodate the driving unit, the invention extracts the mounting requirement from the rear panel and satisfies it directly on the existing rigid base. This achieves secure mounting without adding unnecessary structural complexity.
Solution Approach 2:
The rigid base of the cabinet serves multiple functions: it provides structural support, acts as the mounting platform for the driving unit, and eliminates the need for separate mounting structures like a tub. This multi-functionality reduces overall device complexity.
4Quantity of substance
If the circulation flow path part is designed to collect condensed water, then water can be gathered, but the condensed water may be reheated and evaporated reducing drying efficiency
Solution Approach 1:
The water collection function is extracted from the air circulation path and separated into a dedicated collection portion. Condensed water is removed from the circulation loop and collected separately, preventing it from being reheated and evaporated, thus maintaining drying efficiency while achieving water collection.
Solution Approach 2:
The base is segmented into a circulation flow path part for air movement and a separate water collection part for condensed water storage. This segmentation creates distinct functional zones that prevent condensed water from re-entering the hot air circulation path, eliminating re-evaporation while maintaining both collection and drying functions.
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 enhances the stability and reliability of the dryer, improves drying efficiency by ensuring uniform exposure of laundry to hot air, and allows for precise control over the drum's rotation, reducing noise and vibration while maximizing drying performance.
Implementation Method 1
a heat exchanger configured to exchange heat with the air
Implementation Method 2
a compressor configured to compress a refrigerant
Implementation Method 3
a first heat exchanger disposed at the base and configured to condense the moisture in the air, a second heat exchanger disposed at the base and configured to heat the air, and a compressor configured to supply a refrigerant to at least one of the first heat exchanger or the second heat exchanger to thereby enable heat exchange between the air and the refrigerant
Data Source
Figure 1
Figure 2(a)~3
Figure 4
AI summary
A laundry treating apparatus includes a cabinet, a drum configured to accommodate laundry, a base disposed below the drum, a motor located behind the drum, and a heat exchange unit including a first heat exchanger, a second heat exchanger, and a compressor. The base includes a circulation flow path part configured to circulate air in the drum, a water collection part configured to accommodate condensed water, a collection guide part configured to guide the condensed water to the water collection part, and a water cover located between the first heat exchanger and the collection guide part and configured to support the first heat exchanger and to prevent the condensed water transferred along the collection guide part from coming into contact with the first heat exchanger. The water cover is spaced apart from the second heat exchanger.