Laundry drying machine
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Solution Overview
Problem
Existing laundry drying machines often result in non-homogeneous drying due to humidity sensors not contacting all laundry items effectively, leading to user dissatisfaction and temperature-dependent operation issues.
Innovation Solution
A laundry drying machine that uses a control unit with a temperature sensor to determine the outer environment temperature and laundry load, allowing for homogeneous drying without a humidity sensor by adjusting the drying process based on detected temperature levels and load categories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a humidity sensor is used to detect drying completion, then the drying process can be automated, but the sensor fails to contact all laundry items resulting in non-homogeneous drying
Solution Approach 1:
The patent replaces the mechanical contact-based humidity sensor with a thermal field-based temperature sensing system. Instead of using a physical sensor that must touch the laundry, the system uses temperature sensors to detect the thermal state of air and indirectly infer moisture content, thereby achieving automated control without the limitation of physical contact.
Solution Approach 2:
The patent introduces air temperature as an intermediary parameter to indirectly measure laundry moisture content. Rather than directly sensing the laundry's humidity through contact, the system measures the temperature of air passing through or near the laundry, which carries information about moisture evaporation, thus solving the problem of incomplete sensor contact.
2Device complexity
If a single temperature sensor is used to control drying, then device complexity is reduced, but accurate detection of both environment temperature and load level must be achieved
Solution Approach 1:
The patent makes the temperature sensor perform multiple functions: it simultaneously detects the environment temperature, monitors the drying process temperature, and indirectly indicates laundry load level. By analyzing temperature changes at different stages and positions, the system extracts multiple pieces of information from a single sensor, reducing device complexity while maintaining measurement precision through intelligent data processing.
Solution Approach 2:
The patent transitions from direct measurement of multiple parameters (humidity, temperature, load) to indirect measurement through temperature dimension analysis. By analyzing temperature variations in different dimensions (air temperature, drum temperature, temporal temperature changes), the system derives multiple parameters from a single temperature measurement point.
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
Enables consistent and homogeneous drying of laundry by determining the optimal target temperature and time for the specific environment and load conditions, ensuring complete humidity removal and user satisfaction.
Implementation Method 1
a temperature sensor (6) which is configured to detect the temperature of the air exiting the drum (3)
Implementation Method 2
at least one heater (5) for heating the ambient air which is sucked before entering the drum (3)
Implementation Method 3
at least one fan (4) which sucks air from the outer environment and directs the same towards the drum (3)
Implementation Method 4
a drum (3) which is positioned in the body (2), which has at least one air inlet opening and an air outlet opening and wherein the drying process is realized
Data Source
Figure 1
AI summary
The present invention relates to a laundry drying machine (1) comprising a body (2); a drum (3) which is positioned in the body (2), which has at least one air inlet opening and an air outlet opening and wherein the drying process is realized; at least one fan (4) which sucks air from the outer environment and directs the same towards the drum (3); at least one heater (5) for heating the ambient air which is sucked before entering the drum (3); a temperature sensor (6) which is configured to detect the temperature of the air exiting the drum (3); and at least one air outlet (7) which enables the air exiting the drum (3) to be discharged from the body (2).