Top-Loading Washer Drying Module for Heated Air Circulation

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Solution Overview

Problem

Top loading washing machines lack a drying module, limiting their ability to dry laundry, whereas front loading machines with drying modules face inefficiencies in air circulation and heat distribution, leading to suboptimal drying performance.

Innovation Solution

A top-loading washing machine with a drying module that includes a blower, suction duct, heater module, and discharge duct for efficient air circulation and heating, preventing heat loss and siphon phenomena through strategic port placement and air mixing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a drying module is added to a top loading washing machine, then drying capability is provided, but device complexity increases

Engineering Contradiction:
Improvedrying capabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The top loading washing machine is enhanced with a drying module that shares the same cabinet and control system, allowing the machine to perform both washing and drying functions. The drying module includes a blower, heater module, and air circulation system that operates independently while integrating with the existing washing machine structure.

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

Solution Approach 2:

The drying module components (blower, heater module, air circulation system) are merged into the existing washing machine cabinet structure. The blower is positioned to utilize the same air intake and exhaust pathways as the washing drum, and the heater module is integrated into the cabinet wall, combining multiple functions in a unified system.

Inventive Principle:
Principle #5Merging (Combining)

2Productivity

If air circulation is improved in front loading drying modules, then drying efficiency increases, but heat loss occurs

Engineering Contradiction:
Improvedrying efficiencyVSAvoidheat loss
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The exhaust air that would normally be lost is captured by the blower and recirculated through the heater module. The blower draws air from the cabinet interior, passes it through the heated air pathway, and redistributes it, converting what would be heat loss into useful heated air for the drying process.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The air circulation system operates continuously during the drying cycle, with the blower constantly moving air through the heater module and distributing it throughout the cabinet. This continuous circulation ensures that heat is continuously applied to the laundry and moisture is continuously removed, maintaining high drying efficiency throughout the cycle.

Inventive Principle:
Principle #20Continuity of useful action

3Temperature

If the heater module is positioned to maximize heating, then temperature distribution improves, but siphon phenomena occur

Engineering Contradiction:
Improvetemperature distributionVSAvoidsiphon phenomena
Core Design Contradiction:
TemperatureVSObject-generated harmful factors

Solution Approach 1:

The heated air pathway acts as an intermediary between the heater module and the cabinet interior. The pathway is positioned to discharge heated air at multiple locations, mediating the heat distribution process and preventing direct contact between the heater and water sources that would cause siphon phenomena.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The heater module is positioned to provide localized heating in specific areas of the cabinet, with the heated air pathway distributing heat to different zones. This localized approach allows temperature control in specific areas without creating the pressure differentials that lead to siphon phenomena throughout the entire cabinet.

Inventive Principle:
Principle #3Local quality

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

Enhances drying efficiency by effectively circulating and heating air within the machine, preventing heat loss and siphon phenomena, and maintaining performance even when the drying filter is clogged with lint.

Implementation Method 1

a blower mounted at the cabinet for blowing air in the cabinet

Methodology Applied
Scientific EffectAir circulation: Convection

Implementation Method 2

a heater module connected to the blower for heating the air blown by the blower

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentUS10196768B2Washing machine
Publication Date: 2019.02.05 LG ELECTRONICS INC
  • US10196768B2 patent drawing
  • US10196768B2 patent drawing
  • US10196768B2 patent drawing

AI summary

A washing machine may include a cabinet, a tub in the cabinet, a drum inside the tub, a driving module at the tub for rotating the drum, a water supply module for supplying the wash water to the tub, a drainage module for discharging the wash water from the tub, and a drying module at the cabinet for supplying heated air into the tub from an upper side of the tub to dry the laundry.