Laundry treating apparatus

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Solution Overview

Problem

Conventional laundry treating apparatuses are inadequate in preventing or removing wrinkles from laundry, as they provide continuous friction, which is ineffective for drying and deodorizing while maintaining fabric smoothness.

Innovation Solution

A laundry treating apparatus that uses a support assembly to fix laundry in an unfolded state, combined with air or water vapor in a laundry receiving space, along with an automatically extendable water discharge and supply tank system, to enhance drying, deodorizing, and wrinkle removal capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a drum is used to rub and rotate laundry continuously, then drying capability is improved, but wrinkle removal capability deteriorates

Engineering Contradiction:
Improvedrying capabilityVSAvoidwrinkle formation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by making the support assembly movable rather than fixed. The support assembly can move between a first position (for drying) and a second position (for wrinkle removal), allowing the system to adapt its configuration based on the operational phase. This dynamic repositioning enables the laundry to be supported in an unfolded state during wrinkle removal while maintaining drying capability when in the first position.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent introduces a spatial dimension by positioning the support assembly to extend in a direction substantially perpendicular to the drum's rotation axis. This creates a new spatial arrangement where laundry can be supported in three-dimensional space rather than being confined to the traditional drum rubbing motion, enabling wrinkle removal through gravitational unfolding while maintaining drying through air circulation.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If continuous friction is applied through drum rotation, then drying efficiency is improved, but fabric smoothness deteriorates

Engineering Contradiction:
Improvedrying efficiencyVSAvoidfabric smoothness
Core Design Contradiction:
ProductivityVSShape

Solution Approach 1:

The patent implements periodic action by alternating between drum rotation phases (for drying) and support assembly repositioning phases (for wrinkle removal). The control unit manages periodic transitions between different operational modes, allowing the laundry to experience drying friction intermittently followed by wrinkle removal periods, thereby achieving both drying efficiency and fabric smoothness over the treatment cycle.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent extracts the wrinkle removal function from the continuous drum rotation process by introducing a separate support assembly mechanism. This independent support system can be activated selectively to provide wrinkle removal without requiring continuous drum friction, thereby separating the drying function from the wrinkle formation cause and enabling independent optimization of both functions.

Inventive Principle:
Principle #2Taking out (Extraction)

3Quantity of substance

If water discharge tank capacity is increased to store more condensate, then water collection capability is improved, but device complexity increases

Engineering Contradiction:
Improvecondensate storage capacityVSAvoidtank extension mechanism
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent applies dynamics by making the water discharge tank extendable rather than fixed. The tank can extend in the radial direction of the drum to increase storage capacity when needed and retract to a compact size when not in use. This dynamic extension mechanism allows the system to provide large condensate storage capacity only during periods when water collection is required, reducing the need for permanently complex structures.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements nesting by designing the extendable tank to be retractable into the drum structure. When the tank is not in use, it nests within the drum housing, minimizing the overall device footprint and complexity. When extension is required, the tank protrudes radially to provide additional storage capacity, allowing the system to maintain a compact form factor while providing large storage capability on demand.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Object-affected harmful factors

If support assembly is added to hold laundry in unfolded state, then wrinkle removal capability is improved, but device complexity increases

Engineering Contradiction:
Improvewrinkle preventionVSAvoidsupport assembly mechanism
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies universality by designing the support assembly to perform multiple functions: it serves as both a drying support structure and a wrinkle removal mechanism. The same support assembly that holds laundry in an unfolded state during wrinkle removal also provides structural support during drying operations. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in device complexity while achieving wrinkle prevention.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the support assembly with the existing drum structure and control system. The support assembly is integrated into the drum housing and controlled by the existing control unit, combining multiple functions into a unified system. This merging approach allows the support assembly to work in coordination with the drum rotation and air supply systems, achieving wrinkle removal without requiring entirely separate independent mechanisms, thus limiting complexity increase.

Inventive Principle:
Principle #5Merging (Combining)

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 apparatus effectively dries, deodorizes, and removes wrinkles from laundry by utilizing the support assembly and air or water vapor, while the automatic tank extension system improves user convenience and efficiency.

Implementation Method 1

a first heat exchanger provided inside the duct to dehumidify air entering the duct

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 2

a second heat exchanger provided inside the duct to heat air passing through the first heat exchanger

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 3

a moisture supply part provided in the first chamber to supply unheated water vapor or heated water vapor into the laundry receiving space

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentUS12281432B2Laundry treating apparatus
Publication Date: 2025.04.22 LG ELECTRONICS INC
  • US12281432B2 patent drawing
  • US12281432B2 patent drawing
  • US12281432B2 patent drawing

AI summary

A laundry treating apparatus includes a cabinet; a laundry receiving space defined in the cabinet and configured for receiving laundry therein; an insertion opening defined in a front face of the cabinet and in fluid communication with the laundry receiving space; a door rotatably fixed to the cabinet to open and close the insertion opening; a supply unit configured to supply at least one of air or water vapor to the laundry receiving space; a support assembly provided in the laundry receiving space and configured to support the laundry; and a conveying part configured to move the support assembly toward the insertion opening when the door opens the insertion opening.