Clothing treating apparatus
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Solution Overview
Problem
Existing laundry treating apparatuses face issues with friction, wear, fluffing, shrinkage, and over-drying during the drying cycle due to the tumbling motion, which causes damage to laundry items and limits control over drum rotation speed and direction.
Innovation Solution
The apparatus introduces a drum rotation motion that alternates between high-speed and low-speed periods, with the laundry rotating integrally with the drum at speeds equal to or higher than 1G in certain phases to minimize friction and ensure even drying, and includes a direct drive system to control drum rotation without belts or pulleys, allowing for specific motion patterns like hanging and rolling to protect the laundry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the drum is rotated using a belt and pulley system, then the structure can be simplified by omitting a reducer, but the rotational acceleration of the motor is limited and the drum rotation direction cannot be changed rapidly
Solution Approach 1:
The patent removes the belt and pulley components from the drum rotation control system, extracting the problematic elements that limited rotational acceleration. By eliminating these intermediate transmission components, the motor can directly control the drum rotation, enabling rapid changes in rotation direction and speed without the constraints of belt slippage.
2Productivity
If the drum rotates at high speed continuously, then drying efficiency is improved, but the laundry may be over-dried and damaged by hot air
Solution Approach 1:
The patent implements periodic variation in drum rotation speed during the drying cycle. The drum alternates between high-speed rotation (for efficient drying when laundry is wet) and low-speed rotation (to prevent over-drying and damage when laundry approaches desired dryness). This periodic adjustment of rotation speed optimizes both drying efficiency and laundry protection throughout the drying process.
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 approach effectively reduces friction and wear, prevents shrinkage, and ensures even drying while protecting the surface of the laundry, thereby minimizing damage and maintaining fabric integrity.
Implementation Method 1
a heat pump 6 accommodated in the circulation flow channel 5 to condense air and re-heat air
Implementation Method 2
Water condensed by the heat pump 6 may be collected in a water storage tank 9 using a pump 8
Data Source
AI summary
The present invention relates to a clothing treating apparatus which provides various optimized drum motion combinations capable of preventing damage to or shrinking of clothing in each of a preheating section, a constant rate drying section, a reduced rate drying section, and a cooling section.