Integrated washing and drying machine

Solution Overview

Problem

Combined washing and drying machines have low drying performance due to low condensation efficiency, requiring manual clothing retrieval and occupying separate spaces for washing and drying machines.

Innovation Solution

A combined washing and drying machine design featuring a condenser with a roller, drying duct, water inlet device, and drainage system, utilizing a cycle wind path and multiple water outlet holes for enhanced heat exchange and drying efficiency, including a condenser with condensing plates, a housing, and a bar-shaped water inlet device for efficient water distribution and heat exchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a combined washing and drying machine uses a simple condenser structure, then the device complexity is reduced, but the condensation efficiency deteriorates leading to poor drying performance

Engineering Contradiction:
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The condenser is divided into multiple condensing plates (first condensing plate and second condensing plate) with distinct water inlet and outlet regions. Each plate has water inlet holes and water outlet holes distributed at different locations, creating segmented water flow paths that increase the effective condensation surface area and improve heat exchange efficiency without significantly increasing overall structural complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a vertical dimension to water flow by positioning water inlet holes and water outlet holes at different heights on the condensing plates. Water flows downward through the condensing plates under gravity, creating a multi-level heat exchange structure that maximizes contact between condensed water and the condensing surface, thereby enhancing condensation efficiency in a compact space

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

2Device complexity

If condensed water is not properly distributed on the condensing plates, then the device structure is simpler, but the heat exchange efficiency deteriorates

Engineering Contradiction:
Core Design Contradiction:
Device complexityVSUse of energy by moving object

Solution Approach 1:

Water inlet holes and water outlet holes are strategically positioned at specific locations on the condensing plates rather than uniformly distributed. The first condensing plate has water inlet holes at its first location and water outlet holes at its second location, while the second condensing plate has water inlet holes at its third location and water outlet holes at its fourth location. This localized water distribution ensures optimal wetting of the condensing surfaces in different regions, maximizing heat exchange efficiency

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent utilizes gravity-driven hydraulic flow to distribute condensed water through the condensing plates. Water enters through water inlet holes and flows downward through the plate structure, exiting through water outlet holes positioned at lower locations. This passive hydraulic system ensures uniform water distribution across the condensing surfaces without requiring additional pumping mechanisms, maintaining structural simplicity while achieving efficient heat exchange

Inventive Principle:
Principle #29Pneumatics and hydraulics

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

Improves drying performance by creating a cycle wind path and efficient heat exchange, reducing the need for manual clothing retrieval and minimizing space usage, while enhancing convenience and energy efficiency.

Implementation Method 1

the condenser is configured to input condensed water through the water inlet device, and is configured to discharge the condensed water after heat exchange

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 2

the condenser comprises at least one condensing plate... the first side and the second side are respectively provided with the plurality of water outlet holes which are connected to an inner cavity of the bar-shaped container

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 3

the hot and humid air inlet of the condenser is connected with the roller, the dry air outlet of the condenser is connected with air inlet of the drying duct, and air outlet of the drying duct is connected with the roller to form a cycle wind path

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP3399093B1Integrated washing and drying machine
Publication Date: 2022.11.30
  • EP3399093B1 patent drawingFigure 1
  • EP3399093B1 patent drawingFigure 2
  • EP3399093B1 patent drawingFigure 3

AI summary

A combined washing and drying machine is disclosed, including a roller, a condenser, a drying duct, a water inlet device and a drainage device. Hot and humid air inlet of the condenser is connected with the roller, dry air outlet of the condenser is connected with air inlet of the drying duct, and air outlet of the drying duct is connected with the roller to form a cycle wind path. The condenser inputs condensed water through the water inlet device, and discharges the condensed water after heat exchange through the drainage device, and a plurality of water outlet holes are distributed in the water inlet device. The combined washing and drying machine is capable of cleaning clothing and drying clothing, thereby avoiding the need of manually and repeatedly accessing the clothing, and it is thus very convenient.